As stated, back off from RL22 data. I was able to get 3175-3200 fps with RL23 and a 140 NBT. Don’t quote me on this, it has been a couple of years ago, but I think I ran out of case capacity with RL23 before I ran into high pressure signs.

***EDIT***
To clarify, the above is in reference to a 280AI.

Last edited by drano 25; 03/04/24.
Don't speculate when you don't know, and don't second guess when you do.