They use 2 1/2 AND 3 inch 410 shells.

I had 45 Colt cases made that were 3" long; but they wont fit. Brass 3" 410 cases DO work. Theres enough of a taper that the long 45 Colt cases wont fit

I loaded 3" Brass 410 shells with a heavy load of B/P and a round ball then crimped the top with a crimping tool a member made.

Even With a heavy load of B/P the recoil was at best moderate. Ultimately Id like to find a conical that could be pressed into the 410 shell.

I havent tried any handloaded smokeless rounds yet....

I bought the Alaskan model because I liked the grip better than the Auto/Burglar and the Vintage model wasnt available. Today Id pick the Vintage for sure; but Im not convinced its worth the $1500+ for a second model, even if it does have hammers