I am building a rifle in 7mm saum with a 28'' barrel for long range hunting. What twist for 175 or 180 sierra MK. I am thinking 1:8.5 but I see that 1:9 is popular with folks on the internet. Sierra recommends 1:8. I may entertain using 162 Amax, can the Amax be over twisted with 1:8.5?
Thanks for the advice
Thanks for the advice