I have found that small shot like 71/2 and 8 have little value in muzzleloading shotguns, except for small game like quail and squirrels. their low velocity, and cylinder bores, make small shot game wonders, instead of game getters. I think many compare the knockdown power of a modern cartridge gun, to the same gauge muzzleloader, which is a lot like comparing apples to oranges.
Hungry Horse