Re: Question about twist rate on barrels.
All correct. I have found my 1:9 ARs shoot up to 68/69 grain very weel, but nothing heavier. For that I go to 1:8, 1:7.7, or 1:7 to go up to 75 and 80 grain. I always match bullets to rifles starting with the HEAVIEST I have and working down to the...