Byron,
I think you are onto a great idea. Let me know how it turns out. I just shipped my Sabati back via Cabela's and they were very helpful at the Billings, Montana store. They assured me there won't be any of the nasty muzzle grinding stuff. The rifle should be properly regulated on return so I would very much like a cast bullet load. Besides, that is a great use for your wheel weights.
Regards,
John