Just a quick note about .410's and TSS ammo. I just returned from a hunt in Washington state where we killed 4 turkeys with my little Winchester 42 using Federal TSS ammo. I shot a tom and a hen, and my 2 brothers each shot birds...a jake and a hen. In all cases the birds went right down. The longest shot was just under 40 yards, the other shots ranged from 20-30 yards.
Bottom line...Yes, a .410 loaded with TSS shot kills turkeys quite dead!