What barrel twist rate does it take to stabilize 156 grain and 160 grain bullets in a 6.5x55 SE?
I cannot tell you absolutely what rate it takes but from experience with 156g bullets in my 2 6.5x55s (a Ruger No 1 RSI & a Steyr Mountain Rifle) 1:8 twist does a fine job with the 156g Oryx or Mega I mentioned previously. I have put a fair number (>20) of each into targets and one Mega from the Steyr and one Oryx from the Ruger into live game, and all sure shot where aimed and none exhibited any indicia of instability.
RAS
