Does anyone have a first hand knowledge and opinion of the Sig M400? I saw a nice one with all that I want for under $1000+tax. I aminterested in shooting 55-62 gr bullets so what twist rate should I look for?
A one turn in nine inches is common and will handle the bullets you mention and will often handle up to 75 grain bullets and some will even handle 77 grain as well but don't expect the latter.
I should have mentioned that, yes, I have experience shooting 55 grain to 69 grain bullets in my AR15 with a one in nine inch twist barrel.
Last edited by P. Greaney; 06-10-2012 at 02:14.