6BR, 70 grainers, Best powder choice?

Rflshootr

Member
I'm in the process of building a 6BR with an 8 twist (just in case I decide to go heavier) to shoot 70 grainers as a live varmint rig. If anyone has played with this combination and can give a powder recommendation of what to start with, I'd appreciate it.

Right now the powders I have to choose from are:
RE-7
IMR3031
N133
H335
IMR8208XBR
H4895
RE15
Varget

Opinions on what to start with please.
 
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Neither are on your list but I've had great results with h322 and n135, with light bullets, up to 74 grains, in a 6br.
 
again not on the list but very good and very popular is h322
 
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