Dude,
Before you blow yer self up, post anything your gonna be doing for reloading first.
You can NOT use a powder thats over 20 faster on the burn chart in your 270. Well you can, but you have to use very little, and can still blow yer piece up. So make us all happy DON'T.
http://www.hodgdon.com/burn-rate.htmlThere is the burn chart, every swinging richard should know every powder they use.
Let me school you on a few things:
Powders are used for bullet weight ranges. I use 3 different powders for the same firearm. DI'mending if Im loading 100gr varmint grenades, 152 gr AP, or 180 ballistic tip.
You just cant hodge-podge shit together. Well, and live to tell about it.
Ive been reloading since I was nine, and am approching my 6th decade on the planet, and have not blow myself up.....YET.
The powder you want to try is Ball C lot 2. Trial and error is the only way to find how they will group. Atleast you wont blow yer stuff up.