on their varmint rifle? These little dodads come in 8oz and 10oz weights and clap to shotgun barrels. Low and behold, my Citori 12ga barrel is about 7/8" in diameter and so is my Model 70 varmint barrel. So I'm thinking...This could be an easy way to add weight, see your shots better, reduce felt recoil, and maybe even "tune" the barrel a little. The only thing I'm not sure of if it would stay in place with higher recoiling calibers. They do seem to have some kind of lining material that may add some friction.