I'm new to reloading 45 ACP ammunition. A couple of weeks back I bought a new FN FNX 45 ACP Tactical, and the pistol runs awesome with factory ammo with zero issues.

Half of my reloads suck however. Failure to feed and/or eject.

I'm shooting Berry's 230gr FMJ's, Remington 230gr MC bullets as of now. I'm loading these all with Vihtavuori N310 powder. 4gr charge to be exact. Federal 150 primer.

I think my issue is crimping, or lack there of, but please correct me if I'm wrong. Like I said, I'm new to pistol reloading.

Also, I'm using RCBS dies. With the 4gr powder charge, the pistol recoils hardly at all it seems when shooting the 230gr bullets.

Are my loads too weak or what? Not enough power to let the slide go back all the way?