04-12-2022, 11:18 PM
Welcome to the forum zealful! The 1:9 twist will stabilize those bullets but 1:8 twist usually does better with long heavier bullets (125+ grains or long monolithic bullets). Bill Alexander testing showed improved accuracy from short barrels with fast twist 1:1.75. I have two 1:9 twist 6.5 Grendel barrels (16, 20) and they both are accurate but I have never shot any bullets heavier than 123 grains.

