for hand guns the largest I've fired was the 50AE desert eagle I had for over 20 years. Not that big of deal! For rifle, the nastiest was a Ruger 77 in 458 Win Mag hand loaded with jacketed 350 grain bullets, I don't know any other info, but comparing factory 500's to these was like 38 special to a 44 mag.

These are nothing to what some of you guys set off! Ivan.