The 38# Wolff springs are in my 9mm Lugers (NOT .30 cal). I'm suggesting that possibly your particular pistol was used with rounds that exceeded standard pressures for the .30 cal Luger round . The parallel I'm trying to make is that the C96 mauser round (7.63 Mauser) and the Tokarev 7.62 round are close enough dimensionally that many people have used the notably higher pressure Tokarev round (because it was cheap and plentiful) in the C96 causing damage that is similar to your experiences. I know a guy that reloads his ammo and I cringe when I shoot with him as I feel that he is pushing his loading beyond reason judging by the muzzle blasts alone. He's a nice enough guy, but I do stand back a bit.
