I just started reloading 45acp. Prior to this I have been reloading .38 special and .357 magnum. Using a Forster Co-ax press, I'm loading second hand brass, not trimmed. Bullets are Zero 230g RN FMJ. 5.5 grains Win231. Federal Primers. Overall cartridge length at 1.265-1.270. Initially, I set things up to seat and crimp in one step. The finished cartridges looked OK, but about 1/3 of them would not drop into a Wilson .45acp Case Gage. So I tried adjusting the seating/crimping die, but without any better success. Concerned about the cartridges not fitting the Gage, I reset the the seating die to seat only, followed by the Lee FCD, followed by a Case Gage check. Now almost every cartridge fits the Gage. So does my technique need improvement, so that I can successfully seat and crimp in one step? Is is necessary that all cartridges fit the Gage? Or is the Lee FCD the answer to ALL of my problems? Thank you.