If you never plan on shooting anything heavier than 50 grain, I'd go with 1:12.
But, if down the road you decide you want to try something like a berger or a 69 grain sierra, then go with 1:8
Just my .02¢ worth.
I have a Rem 700 BDL - Made in 1967. It's a 1:14 - Loves 40-50 grain bullets. Shoots sub .25" with one particular load, and
usually sub moa with just about everything else. But it HATES factory Hornady Superformance 50grain v-max - best I can
get is 1.25".
Last edited by Owl; 05/09/17.