Wahoo.
I dont rate that at all for the following reason. Tool marks on metal are a series of score marks and if you could cut the choke section of the barrel and open the tube out it would look like row of hills and valleys. Now to remove the marks fully you have to polish down the hills to the valley bottoms, so you need something rigid to hold the compound so that it lowers the hills first down to the valleys thus removing the marks you can see. Now if you use something that gives your idea it will polish the hills and valleys equally so the marks will stay but will be polished. In the end it is your gun so you must do what you feel is right if you do not want to go to the trouble of returning the gun with a complaint. I hope the explanation makes sense.
damascus
