by birdshot » Thu Apr 28, 2011 11:50 am
all you need are a couple of brass plugs of the correct diameter and a dowell rod and hammer. start with a plug slightly smaller than your bore diameter and lightly tap it beyond the dent. next plug should be bore diameter and repeat with this plug. use some wax or resizing lube, and clean barrel before starting.
after you are done you could sell the brass plugs on this web site because there are alot of 16 gauges with small dents in the tubes.