Piglet
Silver $$ Contributor
Hello guys. I bought a 6br early last spring, used rifle off of this forum. It's a 28" 8 3/8-8 gain twist barrel. Supposedly a bartlein, but no way to know. I've been shooting it off an on this year and can't seem to get above 2800 fps. 107 sierra seem to shoot the best so far. Getting low s.d. but the really low ones don't produce the best groups. Anyways I worked up to 31gr of shooters world precision to get 2795 fps Ave, and 2.0 SD. 30.7 varget gave me 2792 and 7.7sd. Was not happy w any of the varget loads I shot, but may have been me. So my question is why am I so slow? And where do these bullets like to be velocity wise? Do I need a faster powder? How much faster? Thanks for the help