The GAEP DEEP NECK ROLL CRIMPER works AMAZING. It leaves a Federal like buckshot tapered roll crimp. You need a drill press with a moderate rpm(I have my cheap harbor freight one set at 1630rpm), some good lube(I use cotton swab of Vaseline every two or three shells), and just don’t let it get super hot and it’ll leave one of the most beautiful crimps. Literally took a Federal Top Gun trap hull, did nothing to it but open up the crimp with my fingers, put the hull on my drill press and it roll crimped perfectly. I did use a .070” 12 gauge overshot card. That crimper works great, need a drill press though. I tried it with a hand drill at first and it wouldn’t do anything but taper the hull mouth. It wouldn’t roll inward for the life of me. Got a drill press, and BAM, perfect crimps.
They will but could be loose you make have to recondition the primer pocket. Fiochi are a European hull have Slightly larger primer then American primer