Re: Twist rate for a 6mm-06
My 6mm ackley is 1:10 and shoots the 55 gr btips into one hole. The heavier stuff fares pretty well too. One thing to consider is running the numbers before you build the gun. The 55 btip at 4100 bests the 80 gr btip in drop AND DRIFT at 1k. The 107 smk drifts considerably less way out there, but drop is still higher. For my practical purposes, the 55 is the best bullet. The added capacity of the 06 or a 6-284 would likely change that with heavier projectiles, but the 10 twist will still stabilize it. 1:9 may be better, but I would avoid 1:8. It just really isn't needed.