I have been hand loading my 410 TSS for a little over a year now. I have never made a shell that looked decent but they all shot fine out of my Stevens 301's. Recently I purchased a mossberg 500 in 410, my ugly handholds wouldn't cycle correctly though it even though they load and eject fine from Stevens. From what I could tell, it was either the brass not being properly resized or I had a slight swell at the roll crimp from trying to cram them without a drill press but im not an expert. I finally purchased a hull vise, drill press and got some brand new hulls and my loads look much much better and cycle perfectly. The roll crimps still dont look as good as a factory, im using a precision reloading roll crimper. Does anyone know which roll crimper makes the cleanest crimp? a few people have told me Gaep is the way to go but ive never tried one
