Just started playing with this combo. Lowest starting loads (52gr) were pushing 3000 FPS w a Hornady143 eld x in a 24” barrel. No bolt stiffness, but too hot for my comfort level. I know there are reports of great velocities in the 270, but didn’t expect 3000 FPS w a 143 in the 6.5-06. I now have about 10 rounds I will be pulling. Just FYI if anyone else tries this combo. Start LOW and work up slowly.
