Hello all, this is my first of many questions to come. I have an AWC M91 BDR with a 20" barrel. I am asking for any input on rate of twist and best bullet weight to suit that rate. This is my first " long range" rifle. My father was good friends with Lynn McWilliams when he operated out of Texas, and he has passed this rifle from mr McWilliams down to me. I am indeed very lucky, and would appreciate any input from forum members, that would help maximize the potential of this rifle. Thank you in advance!
