Has anyone had experience with the Final Finish System, fire lapping system marketed by David Tubb?
I tried it in a 357 Magnum revolver that had a bore constriction where the barrel screws into the frame and the bore had a leading problem. This lapping system was recommended.
Well, I was surprised to see the lapping bullets were jacketed soft points and not lead. I was
also surprised the loads recommended were stated in the instructions to be most any starting load in the manuals.
I followed the instructions to the letter and when I completed the lapping and gave the revolver a complete cleaning I proceded to test some of the cast loads I had had some minor leading problems with prior to the lapping.
After only ten rounds had been fired, I had leading in the forcing cone and throat that looked like someone had just soldered the first inch or so of the bore. Solid lead, not the little bit that I had before after 40 to 50 rounds.
I think David Tubb's "Final Finish System" of bore lapping has ruined my barrel by opening up the forcing cone and throat of my 357 magnum to a point that I now have some serious hot gas by-passing the bullets and flame cutting large quantities lead onto the bore.
I emailed David Tubb and got no answer. He must want my money, but doesn't want to get involved is helping to resolve the problem his lapping system has caused for me.
I don't recommend anyone use this product for fear of ruining a fine firearm.