Steve:
Although I have a homemade version of the Tipton (two bootjacks on a board), I clean doublegun (vertical and horizontal) barrels with steel wool under power on a brush with the barrels removed from gun. I have found that a simple U-channel constructed of 3/4" plywood and covered with jigging felt or carpet on the three sides of the U pads the barrels and prevents them flipping sideways from the torquing effect of the powered brush. Although not really necessary, if you want to clamp or screw the channel down make the bottom of the U wide enuf to create flanges alongside the upright legs. Made the base of mine 4"X30"; the two upright legs 1 3/4"X30"; the space between before adding 1/4" jigging felt 1 1/2". I also have one which has a considerably wider trough (intended for horizontal barrelsets) which does not work well because the barrels are not restrained against flipping. So I use the one I made for o/u barrels for both types.
jack
