I was gonna make a 22-250 coyote gun to shoot the heavies out of. But I have decided I would just rather stay with a 1:12 and shoot smaller bullets to gain the velocity. My average shot is just not that far. Especially since we hunt a lot at night. Honestly, Ill have no need to achieve the ranges you could gain with the heavier bullets. Thought someone could use it being a blank and could chamber in what ever they liked.