was the gun hard to close when loading the reloads?
I had some probs when I started reloading...my crimps weren't deep enough, so the crimp end of the shell was a wee bit wider than the rest,& nmust have been binding at the far end o the chamber.
These were harder to close the gun on, & much harder to extract/eject.
I soon fixed that prob, but just an idea from past experience.
I'm sure your a good loader, but no harm to mention it
good luck
franc