I used to hunt turkey exclusively with a big ol 10 bore SxS muzzleloading shotgun. I truly enjoyed that! On kind of a modern firearm kick at the moment...
But I can see getting back into that. Also used to load shorter black powder shells for a couple old Belgium 12 bore SxS hammer guns (Shrapnel, enjoyed your picture, roll crimp?). Was even published about some of it in the now defunct "BlackPowder Hunting" magazine out of I forget where Wyoming. But that and a couple bucks got me a cup of coffee this morning.