What powder, case and primer?
I used Win cases/primers and R-15 in mine to replicate 7-08 performance (3050fps, 22" bbl). I think it's 47gn of '15. There may be a few FPS left on the table but it shoots so doggone good that it doesn't matter to me. Mine's a Mauser that was done in the early 50's with a 4x Ajax in claw-mounts and I'm not shooting it far enough that +/- any FPS makes any difference.
