The one gun I felt a need to lap the barrel turned out good. It is a CVA Bobcat that had a slightly undersized bore at .498 to .499. I used a combination of fire and hand lapping. I bought the fire lapping kit from MidwayUSA which comes with 3 different grits and two plates to use to embed the compounds into the bullets. If you consider using this method, proceed with caution. It can remove metal quicker than you may realize. I used about 10 of the coarse grit to open the bore up a bit then used 5 each ofthe finer grits to start polishing it. After the fire lapping it had brought the bore up to .500 with only around 20 shots. I then hand polished the bore using 1200 grit polishing compound on a tight fitting patch and bore brush then a jag. I did around 200 strokes with this combo and ended up with a very smooth and shiny bore that loads and shoots well. Final bore size is just a shade over .500.

Again, use caution when fire lapping especially with the coarser grits. You cannot replace the metal once it is gone. Clean and remeasure the bore after every few shots to confirm where you are before moving forward.