Well I assume you know what you're doing, beautiful dog but I'm pretty sure it will be really smart and really headstrong given the two breeds. My white GSD pup needed lots of socialization and positive attention to become a good dog. He got some negative attention for a very few serious transgressions but at some point you have to realize that all that is happening is doggie's head is hurting your hand, nothing else.
Does your Kimber eject all the hot empties in one spot or scatter them all over the range.