Since this thread is back...

Im wondering if it would be possible to load full length brass cases for 410 Shotshells with the bullet exposed like a "rifle" cartridge? Im picturing a BP 410 "Rifle" cartridge

I already load roundball slugs in them using a "crimping" tool (made by a member here) to put a 3 point crimp on the case, but I was thinking a loaded lead bullet would be cool in a 410 rifled barrel.

I "know" I can form full length 410 cases from 303 and 9.3x74R cases. It seems possible to my novice eyes???