I don't like the thought of the emery paper in contact with any part of the barrels. I used the Bondo method with hardwood blocks roughly pre-shaped to the barrel contours and it worked great. Like V.M., I heated gently a few times with penetrating oil (I used diesel fuel) atop the plugs between tries. Keep the blocks as a dedicated pair in case you wish to remove the breechplugs again in the future. Be sure to note the line-up marks on the bottom of the barrels when re-tightening. Old V.M. jug-choked by Dewson 10-bore in 1968.
