RE: cva bobcat
The kit I used was purchased from MidwayUSA. The kit includes 3 grits of lapping compounds and 2 metal plates used to imbed the compound into the bullets you use (I used some Ballets). The coarse grit isquite coarse and can remove metal fairly quick so care must be taken (it is more like valve lapping compund than a polishing compound). The other 2 compounds are still pretty coarse so the best advise is to go slow and recheck often. I only shot around 15 to 20 shots to increase the bore by over .0015". I finished the process by hand lapping with some 2500 grit compound on a multi-patch wrapped bore brush for about 200 strokes, changing the patches and adding compound every 50 strokes, to polish the bore. It came out nice and shiney and ended up the correct size.
I would be very careful about using the compound as a bore fouling medium as the result may cause the bore to be enlarged and or damaged.