Thread: 280 Ackley

Research the difference between the SAAMI .280AI and the original .280 Ackley dimensions to avoid potential case issues from mixing the two. RE-22 would be my pick, from 58gr starting on up. Should get 3000fps for 60kPSI peak pressure with that length of barrel and 62gr RE-22. Views on primer type required are split; try both and then decide. Kreiger emailed me the other day with the following "....We have seen more problems (accuracy, copper fouling, rapid throat erosion, etc.) with this cartridge than any other we have tracked over the years. So much so that we dropped this chambering from our line up several years ago...." My translation of this is you need the mental fortitude to resist loading to replicate 7mmRM velocities then you'll probably be OK....can't manage it myself though and clearly very few can....