I have been reloading shot shells for a few years now using a MEC 600 and have read quite a bit about fine tuning crimps, and watched several well done Youtube videos. One thing I wanted to pass along to other reloaders that I have never read or heard of... I have tried to remove the small hole in the center of a near perfect crimp with the crimp starter and final crimp adjustments to be satisfied generally but not completely happy with the wavering consistency of the small hole. Finally I figured out an important variable.... duration... If I pause too long after the precrimp to look at the lead height, before the final crimp, I think that the precrimp relaxes a bit thus giving me the bothersome hole in the center of the final crimp. Since figuring this out I have eliminated the problem and make crimps like factory.
I am curious if anyone else has had this occurrence?
I am curious if anyone else has had this occurrence?