Lol, I saw the Shooter's Gallery episode, I think it was the Shooter's Gallery, anyway, it looked like it kicked Micheal Bane's shoulder a bit more like a 12, lol. But I'll agree with 20g slug, it's gonna kick some.
(in an effort to re-track)
I'd rather have a .327 rifle though, lol. Be like shooting a .22mag or something, I would think.