Jay, ya just gotta roll yer own................ I have a Butcherized Gew. 88 that I handload for......... the barrel has been hacked off to 18 1/2 inches, so typical loads given in manuals make for HUGE muzzle blast. It isn't so much a rifle as a flame thrower.........
Taking into consideration the weaker steel and action of the 88 Mauser, I can only get 30/30 performance levels out of it, but it's fun to shoot............