Unchained Preppers
General Category => Security & Survival => Topic started by: NOLA556 on December 05, 2011, 03:58:49 PM
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opinions? I've heard it mentioned before, but I never looked into what it actually was until today. IT'S F'ING BRILLIANT!!!!
i want opinions from anyone who has any experience with this caliber to lay out anything and everything they have to say about it. if I hear good things, this may alter my aspirations for my next firearm-related purchase.
one specific point that I want to find out about is AMMO AVAILABILITY. it seems like a fairly uncommon caliber so would it be practical to buy a 300Blk upper if ammo is scarce?
http://300aacblackout.com/ (http://300aacblackout.com/)
300 AAC Blackout (http://www.youtube.com/watch?v=Sd_2tcj7P4s#ws)
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You know whats funny, I started a section on 300 blackout somewhere, and nobody knew what I was talking about. Then some ballistics guy comes and says Its 7.62x39 hur hur hur. Now Hickok makes a vid and every body is like Its the greatest thing since sliced bread! Guess I'm a hipster. :D
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You know whats funny, I started a section on 300 blackout somewhere, and nobody knew what I was talking about. Then some ballistics guy comes and says Its 7.62x39 hur hur hur. Now Hickok makes a vid and every body is like Its the greatest thing since sliced bread! Guess I'm a hipster. :D
never saw the thread.
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You know whats funny, I started a section on 300 blackout somewhere, and nobody knew what I was talking about. Then some ballistics guy comes and says Its 7.62x39 hur hur hur. Now Hickok makes a vid and every body is like Its the greatest thing since sliced bread! Guess I'm a hipster. :D
never saw the thread.
I think it was on LnL, In its last days.
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well either way, if the caliber gains popularity and more companies start to manufacture it, with any luck, price will come down and it would be a viable option.
the concept is fucking genius, but from what I'm seeing, availability and price make it less than practical. I sure hope this country hangs on long enough for this caliber to catch on and drive the price down because it seems like a promising new product.
(of all people, I really want to see what Reaver has to say about this.)
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I'm no Reaver but...
Been loading and shooting for this cartridge for 5 years, mostly for the old non-sami spec 300 whisper. Stupid easy forming and trimming of milsurp 5.56 brass.
For full potential and range of use I would seriously consider paying for the tax stamp and buying or making a can for this round. In an ar the selection of powder is more limited than a bolt action but there is still a wide variety of loads for bullet weights from 125 grain to 220s. The ar magazine has some limits on the cartridge also, do your research and think thru your intended use. Looks good for off the shelf ammo if you don't roll your own and don't mind paying good coin for it. Subsonic has a rainbow like but very consistent trajectory (better be good at doping those distance shots accurately). 150 grain or heavier bullets carry there momentum better than the 7.62 X 39, I've never shot anything heavier than 150 grain bullets out of an ak.
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I'm no Reaver but...
Been loading and shooting for this cartridge for 5 years, mostly for the old non-sami spec 300 whisper. Stupid easy forming and trimming of milsurp 5.56 brass.
For full potential and range of use I would seriously consider paying for the tax stamp and buying or making a can for this round. In an ar the selection of powder is more limited than a bolt action but there is still a wide variety of loads for bullet weights from 125 grain to 220s. The ar magazine has some limits on the cartridge also, do your research and think thru your intended use. Looks good for off the shelf ammo if you don't roll your own and don't mind paying good coin for it. Subsonic has a rainbow like but very consistent trajectory (better be good at doping those distance shots accurately). 150 grain or heavier bullets carry there momentum better than the 7.62 X 39, I've never shot anything heavier than 150 grain bullets out of an ak.
pretty good run-down columbo. (lol, the only reason I asked for reaver is because he's so in love with his AK, i wonder how he'll feel about the AR world stealing his precious caliber. >:D)
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There are other reasons I don't like the AR
Caliber isn't the biggest. Design is.
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pretty good run-down columbo. (lol, the only reason I asked for reaver is because he's so in love with his AK, i wonder how he'll feel about the AR world stealing his precious caliber. >:D)
LOL! That made me laugh! That's pretty funny! I'm sure he'll have something to say about it.
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pretty good run-down columbo. (lol, the only reason I asked for reaver is because he's so in love with his AK, i wonder how he'll feel about the AR world stealing his precious caliber. >:D)
In the interest of pissing in everyones breakfast cereal the guns I have at the ready are in alphabetical order Ak in 7.62x39, Ak in 7.62x51, Ar in 5.56, Cetme 7.62x51, M1 garand (no caliber explanation needed) Mossberg 590 modified to a rifled barrel (I like to cheat).
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There are other reasons I don't like the AR
Caliber isn't the biggest. Design is.
I was looking for something more like, " Alright! A 300 yard AR. What will they think of next!"
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There are other reasons I don't like the AR
Caliber isn't the biggest. Design is.
I was looking for something more like, " Alright! A 300 yard AR. What will they think of next!"
lol..
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guys i think this is a great idea, but if i want something that shoots a round like a ak..i want a AK, but if i want 223 ill gladly use a ar, i would rather have ak reliability if i spend my money. but remember, guns are like girls, we all have opinions about which one is better. just thought i would throw that out there. and i do hope the make this more popular.
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guys i think this is a great idea, but if i want something that shoots a round like a ak..i want a AK, but if i want 223 ill gladly use a ar, i would rather have ak reliability if i spend my money. but remember, guns are like girls, we all have opinions about which one is better. just thought i would throw that out there. and i do hope the make this more popular.
Anybody else impressed with backwoods occasional input? Not the input itself, but the fact that is is topical and makes seance, and lacks jackassery. [URL=http://www.smileyvault.co
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guys i think this is a great idea, but if i want something that shoots a round like a ak..i want a AK, but if i want 223 ill gladly use a ar, i would rather have ak reliability if i spend my money. but remember, guns are like girls, we all have opinions about which one is better. just thought i would throw that out there. and i do hope the make this more popular.
well from what I can see about this caliber, it's more about convenience and versatility than anything. all you need is a 300 upper and everything else is compatible. bolt is compatible, mags are compatible, lower, etc. I thinks it's freakin brilliant.
my buddy is all obsessed with this new Colt rifle that is a crossbreed between 5.56 and .308 but not only does it require different uppers, it's also different mags and some gay little magwell conversion piece. of course, x39 has nothing on .308, but it's still a viable 30cal round from an AR, just change the upper and everything else is compatible. (really just change the barrel, but that's not as convenient)
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You know whats funny, I started a section on 300 blackout somewhere, and nobody knew what I was talking about. Then some ballistics guy comes and says Its 7.62x39 hur hur hur. Now Hickok makes a vid and every body is like Its the greatest thing since sliced bread! Guess I'm a hipster. :D
your not a hipster because you knew about 300blkout, before it was mainstream....
LOLOOLOL
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Thanks spirit i have been working on not being so rude about opinions not just on here but at school also, i thought i had a lot of friends at the beggining of the year but now almost everyone is walking around telling me hey and shaking my hand. no that i ask people now how i was before they say "i thought u were a asshole". anyways back to topic i think this would be a good caliber if the weapon will cycle cheap wolf ammo around 5 dollars a box are in that range.i can honestly say this is a perfect weapon for some one stuck between a ar or ak now that i watched the video.
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holy crap 697.50 at AIM for 1000rds....
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lmao thats way out of budget for me or anyone i know.
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holy crap 697.50 at AIM for 1000rds....
... I know man.. but like I said before, with any luck, if it gains popularity, there will be more competition in the market which would drive the price way down.
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I've actually been following the .300's escape from obscurity for a month or so now lol.
It looks like a fantastic round and I'd love to own one if the price of ammo for it ever goes down to a reasonable price.
Also, cheap uppers from DSA. You can just slap any 5.56/223 bolt in there and all that other stuff and it will work. Check em out here.
http://www.dsarms.com/DSA-ZM4-Forged-7075T6-A3-AR15-Upper-Receiver-300AAC---DSZM4CBU300/productinfo/DSZM4CBU300/ (http://www.dsarms.com/DSA-ZM4-Forged-7075T6-A3-AR15-Upper-Receiver-300AAC---DSZM4CBU300/productinfo/DSZM4CBU300/)
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Here's something interesting I found.
To assemble a .300 Blackout with the DSA upper I showed you in the link with a Mil-Spec bold carrier group (Daniel Defense), a plain Jane charging handle, and a Mil-Spec lower receiver it would cost about an average of $713. That's without a rear sight, optics, magazines, or ammo.
You could probably factor in about $100-$250 on average for a change in furniture.......exceeding that if you splurge on a rail system.
So really the most expensive part of a .300 build would be stocking up on ammo. It uses the same bolt and magazines as the .223/5.56 so ammo would be the biggest difference between building one of these and building a 5.56 Mil-Spec AR-15.
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I have an idea.
Take all of that money, and buy your self 2 extra K in ammo. [URL=http://www.smileyvault.co
If nothing happens for 15 years & ammo prices fall dramatically, then go ahead shoot up all that 5.56 and buy 300AAC
The choice is completely obvious in my eyes, and the only upper I would blow money on with ammo that high would be the .50 Beuwolf.
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I have an idea.
Take all of that money, and buy your self 2 extra K in ammo.
I can agree with that lol. (http://www.smileyvault.co
If nothing happens for 15 years & ammo prices fall dramatically, then go ahead shoot up all that 5.56 and buy 300AAC
The choice is completely obvious in my eyes, and the only upper I would blow money on with ammo that high would be the .50 Beuwolf.
[/quote)
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I don't think I'll go to a caliber that mimics the 7.62 x 39 ballistics at 5 -7 times the price. I'll just stick with my AK round. I'm funny that way...I've never been butt-raped and I don't intend to start now. :))
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im interested to see what the ballistics of the round actually are ...it would seem that if you took the same case and added a heavier bullet it will move slower and what ever you gain in momentum you lose in velocity so your back at square one on improving the range of the cartridge. long story short it would seem like an expensive way to gain little to nothing.
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nola, did you buy a chevy volt as soon as it came out too?
all i'm saying is if you want an ak round, buy an ak
if you want an ar platform buy an ar15
maybe it's an ok round idk, but until it's $4 a box for ammo and available at walmart, with years of reputation being earned
you can count me out [url=http://yoursmiles.org/p-m
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If i was 21 and could get a suppressor i'd be all over this.
It's a niche round that has the ability to operate outside of it's niche.
It's no 6.8 or other equivalent.
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Enough pussy footing around.
This round as being discussed has a primary use as a killing weapon for use against hostile humans. It has been made to take advantage of the obfuscation and misdirection advantages of a silencer or suppressor specifically. It mimics the capabilities of the ak round for normal (unsuppressed) use with some additional options for almost silent work (handy for popping game without waking the neighborhood too) The strength of this round lies primarily as a force multiplier for sneaky deceitful SOBs who want to take down opposition with as much of an advantage in time, concealment and sometimes misdirection as possible (you can actually bounce a bullets ballistic crack off of hard objects at the bad end, hint: target selection). This round requires practice and knowledge of its ballistics to take longer shots but is not by any means limited to 300 yards. The penetration at 500 yards with heavy bullets will exceed the standard ak round at 300 (that's the advantage of momentum over energy that's often overlooked). The accuracy at 500 yards is also excellent for a trained individual.
Look at this round as the latest hot mall ninja toy OR something to cheat with and slaughter your enemies.
Pretty pointless in my opinion without a can though.
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nola, did you buy a chevy volt as soon as it came out too?
all i'm saying is if you want an ak round, buy an ak
if you want an ar platform buy an ar15
maybe it's an ok round idk, but until it's $4 a box for ammo and available at walmart, with years of reputation being earned
you can count me out
I just this it's pretty nifty that you can switch between two calibers and use the same bolt/mags/ everything but the barrel. do I plan on going out at buying a 300Blk upper? hell no. I don't even have enough money to shoot 5.56 right now. but like I said I just think it's a cool concept and if the price comes down in the future then it may be a very practical system. the ballistics data that I looked at shows the 300 exceeding the ballistics of 7.62x39, with roughly the same maximum effective range.
and to those who have said "just buy an AK".. well sure, I can see your point, but you can't load up an AR mag with 7.62x39 and slap in into your AR.
and as far as cost efficiency. yea, that sumbitch is damn expensive right now, but in comparison: Colt just recently released the SP101....? (I may be wrong on the actual model name) and it basically offers the ability to switch between 5.56 and .308 in the same lower/magwell. but you still need separate uppers (obviously) and you need AR10 mags even though the magwell will accept both. all that being said, that rifle is interesting, but it's still not as convenient or efficient as the 300Blk concept, and that rifle runs for around $2400, and that's not counting the 2nd upper. (of course, we all know that .308 is far superior to x39 and/or 300blk, so I'm not arguing that)
for all intents and purposes, all you guys that are being highly critical of this, well I think you're 100% correct. especially coming from a prepper's standpoint. cost efficiency should be up in the top ten terms in the prepper's vocabulary. all I'm saying is that I think the concept is pretty unique and interesting, and it may be worth keeping an eye on to see if it gains popularity, which would subsequently drop the price.
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One more thing to add, penetration with 200 grain cast lead bullets is excessive, front shot in the chest of a deer and out the ass pretty much intact with ruined meat all the way. Rebarreled cz527.
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The only thing the 300 blackout "exceeds" at is the price I'm willing to pay. I'm like Donna Summer; I work hard for the money... [url=http://www.freesmileys.or
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i had to google donna summer
but nice one my friend [URL=http://www.smileyvault.co
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The only thing the 300 blackout "exceeds" at is the price I'm willing to pay. I'm like Donna Summer; I work hard for the money...
you're right, I'm sure the ballistics tables that I looked at were just flat-out lies.
(and also, I'm sure that every new caliber ever invented was dirt cheap right at the moment it was released) [img]http://www.arrse.co.uk/at
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The only thing the 300 blackout "exceeds" at is the price I'm willing to pay. I'm like Donna Summer; I work hard for the money...
you're right, I'm sure the ballistics tables that I looked at were just flat-out lies.
(and also, I'm sure that every new caliber ever invented was dirt cheap right at the moment it was released) [img]http://www.arrse.co.uk/at
JUST LIKE 5.7x28 and 6.8 and 17hmr and 4.6x30! Oh wait all of those are really expensive too. :-X :-X
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The only thing the 300 blackout "exceeds" at is the price I'm willing to pay. I'm like Donna Summer; I work hard for the money...
you're right, I'm sure the ballistics tables that I looked at were just flat-out lies.
(and also, I'm sure that every new caliber ever invented was dirt cheap right at the moment it was released) [img]http://www.arrse.co.uk/at
JUST LIKE 5.7x28 and 6.8 and 17hmr and 4.6x30! Oh wait all of those are really expensive too. :-X :-X
do I really need to give you a capitalism lesson?
ok. supply and demand.
if the caliber gains any popularity, that will motivate the market to bring prices down as different manufacturers compete with each other. (plus none of the calibers you listed are capable of interchanging with a 5.56 bolt/magazine so it's a moot point. not even comparable)
I'm not praising this caliber, I just think it's a cool idea. and hopefully the price may come down in the future IF popularity increases enough to stimulate the market.
I simply don't get what's so difficult for some of you guys to understand.
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NOLA 5.56 screwed with the wrong bear on the topic of supply and demand. I have a degree in Economics, do you? I have a very acute inderstanding of free-markets, blah, blah, blah. If you read in any Economics text or canon, you will find out by definition it is the study of choices. I choose the 7.62 x 39 because it offers me, personally, the most "utility." (Also an economics term). For someone else with a different weapons or income structure other rounds may offer more "utility." Side note: the 17 hmr is a 17-grain joke that is affected by the slightest breeze, the 4.6 is only useful in close quarters, the 5.7 is a joke on the energy scale and the ability to penetrate cover. BTW - the 300 blackout is a 125 grainer moving at 2200 to 2250 fps (probably less in real life 'cuz most people take those fashionable short m4 barrels that are in vogue). The 7.62 x 39 is a 124-grainer moving at 2330 fps out of a 16.25" barrel real-world ballistics.
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NOLA 5.56 screwed with the wrong bear on the topic of supply and demand. I have a degree in Economics, do you? I have a very acute inderstanding of free-markets, blah, blah, blah. If you read in any Economics text or canon, you will find out by definition it is the study of choices. I choose the 7.62 x 39 because it offers me, personally, the most "utility." (Also an economics term). For someone else with a different weapons or income structure other rounds may offer more "utility." Side note: the 17 hmr is a 17-grain joke that is affected by the slightest breeze, the 4.6 is only useful in close quarters, the 5.7 is a joke on the energy scale and the ability to penetrate cover. BTW - the 300 blackout is a 125 grainer moving at 2200 to 2250 fps (probably less in real life 'cuz most people take those fashionable short m4 barrels that are in vogue). The 7.62 x 39 is a 124-grainer moving at 2330 fps out of a 16.25" barrel real-world ballistics.
That argument sounds a bit one-sided. 7.62x39 is not the end all rifle round.
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Shit guys really? What round you choose is your personal preference, based on a whole host of things.
If you all really want to banter on, can y'all do it in PMs? This stuff is getting kind of silly. Seems there are always some people arguing about things that don't need arguing.
Dammit, I'm Moderating again.... ::) C:-)
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7.62x39 awesome caliber for an awesome platform
5.56x45 awesome caliber, completely different mindset from the ak47
300 blackout who the fuck knows it just came out
now yall play nice before i pull out my mod gun and start cappin bitches
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i say if you want a .30 fighting rifle go some sort of .308 or an AK. because its cheaper and will mess shit up too.
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This thread has lead me to the clear absolute decision to go 17 HMR on my primary.
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This thread has lead me to the clear absolute decision to go 17 HMR on my primary.
sheeeit i was thinking the same thing
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This thread has lead me to the clear absolute decision to go 17 HMR on my primary.
Pfft, you don't need guns man. FEMA and Homeland will protect us if something happens. Plus we've always got 911, that's way better than 7.62, 5.56, 300AAC, AND .308 combined.
Sorry I couldn't say that with a straight face :))
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This thread has lead me to the clear absolute decision to go 17 HMR on my primary.
Pfft, you don't need guns man. FEMA and Homeland will protect us if something happens. Plus we've always got 911, that's way better than 7.62, 5.56, 300AAC, AND .308 combined.
Sorry I couldn't say that with a straight face :))
Just add the Mandatory Smiley Insert. ::)
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300 AAC Blackout Suppressed (http://www.youtube.com/watch?v=Q5ALp8-d3dQ#ws)
pretty damn badass....if you ask me...
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Oh good lord please not again [img]http://www.arrse.co.uk/at
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Oh good lord please not again [img]http://www.arrse.co.uk/at
lol just listen to how quiet that is. having at least one guy with this would be of great benefit in a WROL sit. IMO...
jus sayin....
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hELLO ALL RON L HERE
I'm Glad that even with some snipeing at each other, we can all see and know we can and will pick the weapon and caliber that supports our wants and needs? Thats the wonderfull thing about living in america, we can still pick and chose, unlike our breatheren inthe UK and many other places? Rejoice in that choice I say?
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You know whats funny, I started a section on 300 blackout somewhere, and nobody knew what I was talking about. Then some ballistics guy comes and says Its 7.62x39 hur hur hur. Now Hickok makes a vid and every body is like Its the greatest thing since sliced bread! Guess I'm a hipster. :D
lol it was probably me
I still kinda think that though
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i started to like the concept of this round myself
which is why i went out and bought an ak47..........
thats right yall rednecks back
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i started to like the concept of this round myself
which is why i went out and bought an ak47..........
thats right yall rednecks back
You left?
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i started to like the concept of this round myself
which is why i went out and bought an ak47..........
thats right yall rednecks back
Glad to see you back Mountain. :) How did your sabbatical away from the computer work out?
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Away from the computer? Nah...he was just checking out animae porn. ;)
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and this!!!!
300 AAC Blackout on M249 SAW (http://www.youtube.com/watch?v=u5nvFoQDJUI#ws)
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AKSU AK SBR in 300 AAC Blackout with AAC Blackout Flash Hider/Suppressor (http://www.youtube.com/watch?v=BXJRQsX-PW8#ws)
Sweet [URL=http://www.smileyvault.co
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ta-tas that is badass
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You really had me with the 300 AAC M249 but lost me on the AK.
Why chamber an AK in 300 AAC? Seems like more trouble than it's worth if you ask me.
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Is anyone reapproaching this? I've seen people taking a .300 Blk AR pistol with the Sig brace, put a suppressor on it, and have what is essentially a suppressed SBR, that is very quiet. Ammo can be had for ~.50/rd (I just checked). Seems to perform similar to 7.62x39 at a distance, and is very quiet when suppressed for close in work.
Thoughts, now that it has been 3 years since this thread was started?
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Here is an example of ammo prices available online.
http://ammoseek.com/ammo/300aac-blackout
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An integrally suppressed 300 Blackout has been on my wish list for a while... and I'll get one as soon I have more than a pot to piss in... so I'm not holding my breath.
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Integrally suppressed? Tell me more.
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Yup! There are some companies now that specialize in integrally suppressed 300 Blackout uppers... "Daniel Defense" for one. From what I can tell, the sole reasoning for this caliber's existence is to be ran suppressed. It's subsonic ballistics are far superior to 9mm, .40 & .45.
Daniel Defense Integrally Suppressed 300 Blackout (http://www.youtube.com/watch?v=sBpkL4Lhi0k#ws)
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Mmm...
Let me explain where my thoughts on this are.
I have an M1A. Great rifle. Great cartridge. However, there are cons as well as pros, and I'm constantly comparing tools to see if something may work better for me. I got the rifle because the 7.62x51 reliably kills targets up close and at a greater distance than other cartridges and has excellent penetrating of engine blocks/car doors, while maintaining accuracy.
The down sides are the weight of the rifle and the round, the reduced magazine capacity, and the increased cost of ammunition compared to 5.56 and 7.62x39. I also thought I might be in a much more open, mid-Western state by now or the near future, in which the strengths of the M1A at a distance would really shine. That is no longer the case - I seem to be committed to semi-rural areas near urban areas with field of views no longer than 200-300 yards, thus negating a big advantage of the M1A and putting me at a firepower disadvantage compared to a rifle with higher capacity.
Anyway, that is how I think. I don't want a 5.56, and 7.62x39 just doesn't sit well with me. I'm not sure I have a legitimate reason to justify not liking the AK, other than even at 200-300 yards there seems to be a difference in accuracy compared to 5.56 and .308.
Then, I see the .300 Blk cartridge, which seems to combine the accuracy of 5.56 with the penetration of a .30 cal rifle. As a bonus, it is amazingly quiet when suppressed, and is almost identical to 5.56 except for the suppressor and barrel used.
I've seriously considered evaluating it's POU against my M1A and, if it seems superior to my new criteria, possibly selling my rifle/ammo/mags (which altogether cost ~ $1800), and investing in a .300 Blk AR.
It's not something I'm considering lightly, but it seems warranted. Thoughts?
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If you are going to keep your M1A and add to it the 300 AAC I would be warmer to your plan then out right selling your M1A. Ammo will be a tough find in a prolonged situation.
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True, but my thought on that was if it gets that bad, I should be able to get a 5.56 upper and there should be plenty of ammo for that. Understand also, that I already only have about 400 rds for my M1A right now, anyway. Just a money thing. I also know that if you have a proper reloading press and dies, you can cut down 5.56 brass and remake it into .300 AAC brass for reloading.
I'm not sold on the idea yet, by the way...just looking for advice.
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I'm also looking for info on ballistic performance in comparison to 5.56, 7.62x39 and 7.62x51.
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http://www.firearmstalk.com/forums/f20/308-vs-300-blackout-67851/
Here's an interesting debate, even if it is almost 3 years old.
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Rah buddy.. you need to get over hating on the 5.56 already.. just saying..
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I don't hate it! LOL. I just prefer a caliber that starts with a "3".
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Maybe it's time you put the pipe down and come into the 21 century..
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My issue with 5.56 is a lack of penetration through objects such as vehicles (i.e., engine blocks) in an urban environment, mostly. If we had those nice rounds, the black tipped ones that penetrate better, it might not be as much of an issue for me. I'm not archaic in my mindset, I just base my decisions on what info I have.
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If I DID get a .300 Blk, and I got all the necessities for it and a good amount of ammo, I would definitely invest in a 5.56 upper to have both options.
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It's fun to dream Rah however practicality tends to play out when money is short.
Just a thought:
> Buy a 80% lower for $50-. I think the jig is around $30-.
> Then buy a complete rifle kit for ~$400.
You gotz a complete AR for around ~$500-.
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Bulletproof Mercedes Benz - Not So Bulletproof! (http://www.youtube.com/watch?v=OGC-IJnlq1E#ws)
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...And your point is ;)
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that a 5.56 fucking rips shit up....
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I have to agree with TG. Most of the people that bemoan the ballistics of the 5.56 do it out of hearsay and "internet knowledge". There is nothing wrong with a 5.56 with few caveats. If you are a guy that wants to run a silly short barrel(7.5 or 8") or what you really want is a suppressed round then 5.56 probably isnt what you want. If all you are going to do is shoot at ranges from 400m out then you would be better off with a .308. For 90% of how a carbine will be used a 5.56 is very effective. For those who always say that the 5.56 is no good after 400m, actually try it. I can regularly hit 10x12 steel at 600 yds plus and I am no savant.
The 300BLK is a great round particularly if you want to run a very short barrel (under 10") or if you want to run suppressed. That is where the 300BLK really shines. In these cases it still maintains ballistics similar to the 7.62x39. As an all around chambering the 5.56 will get the job done more than adequately. If you live in a state that does not allow NFA or if you dont want to pay the tax then most of the benefits of the 30BLK get lost.
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What he said!
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That's a good summary, CJS06, and is what I believe to be true. TG is correct in that my knowledge of the 5.56 comes from teh interwebz...like 90% of everything else I know about firearms, since I don't have the money or time to get hands on with the many firearms, ammunition and gear I would like to try.
As I stated earlier, when I purchased my M1A, I needed a rifle that would reach out long distances, possibly greater than 400 yards, and also function effectively at shorter ranges. The M1A meets those criteria.
However, since it doesn't seem I will be relocating Midwest anymore and am likely to stay in more close quarters areas, other platforms are starting to look more capable relating to my perceived needs.
I like the idea of a shorter, suppressed rifle where I am right now. I am almost always in places with lots of people, in towns or cities, with the longest sight radius being 50-200 yards, tops. In my mind, without crunching all the numbers, selling my rifle, ammo, gear, etc. should net me $1800, which should enable the economical purchase of a .300 Blk pistol, Sig brace, ammo, and some sturdy but cheaper mags for it. Then depending on if I can scrounge up a little more dough, perhaps a tax stamp and suppressor down the road, since I like the idea of being hard to locate if I need to use a rifle.
These are also just initial thoughts on the subject...I'm not sold on the switch. It would be a pretty major undertaking.