Recoil on a 4 bore truly is enormous. But I think that much of what was written about them is a load of garbage. It does NOT make you spin around, give you detached retina, or give you a concussion. I am not buying the permanent flinch thing either. It is rather difficult to shoot it without a flinch, but I am getting better at it rather than worse. And there are stories about shooting it from horseback is nonsense. NOT going to happen! Well, you could shoot it from horseback, but you won't be on horseback afterwards. Not a chance. Shooting a double load breaks the stock and knocks you out cold. That one does seem plausible.