10-12 twists rates are widely used. 10 is very popular. I like 11.25 personally. It really depends somewhat on your projectile.
I would not worry about buying the best barrel, just get a quality makers barrel chambered for the bullets your going to use. Many of the prefits are good enough to get started. If you lucky you could get Apache to cut you a match chamber out of an X-caliber barrel. Talk to Scope eye.
Learn the craft then decide if you want a high end barrel. The 308 does not have the boiler room for great long range accuracy and the projectiles that have the BC. But, there is plenty of info and shooters out there doing it because of the Military and the F/TR matches.
There are a couple of forums that are tailored to the education of long range shooting
Bookmarks