Hart has a slightly beefier barrel for the Kimber 84M also. I just had my Montana rebarreled to an 8" twist 7mm-08 AI, finished at 23". Bare rifle weighed 5pounds 2 ounces before, weighs 5 pounds 8 ounces now. Balancce feels really good!
Sorry, I can't tell u any more about it right now, I'm in the process of moving to another state, guns and reloading stuff have been temporarily boxed up and moved into storage. I'll be shooting it before the end of the summer.
David
