That video seems odd to me. I doubled my .500 H&H the first time I fired it. It never did it again and it must have been my error but whist I got spun about 40 degrees to my right it didn't hurt. p.s. I weigh 10 1/2 stones. He can't have been holding it properly, best, Mike p.s. my Holland had a skeleton butt plate so these reports of breaking collar bones doesn't seem to wash though JA Hunter managed it but he says it was his fault since he stood against a tree behind him !!