KY Jon, I use those trio of dent raisers, too. I have had ten gauge guns that sometimes needed dent attention, but the 12 ga. would not work. I cut a sleeve off of a fired 16 ga RST, cut a notch in the sleeve for the anvil to go through and slipped the sleeve on the 12 ga dent remover. After oiling the outside of the sleeve, the altered 12 ga dent remover worked well in my tens.

http://www.bakercollectors.com/