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I`ve never used David Tubbs, But I have tried fire lapping in afew barrels. Common sence tells us that fire lapping will put alot more wear on the barrel than just fireing a regular copper jacketed bullet so it will shorten the life of the barrel. That said, sometimes it does help and others it just wears out your barrel. It worked very well for me on 2 barrels. 1 was a new Dogulas I put on a .257 AI. The best I could get it to shoot was 3 to 3 1/2 in. groups at 100 yrds. I got it sub-moa by alittle. The other barrel that it worked for me in was a .17 Rem. barrel that was foulled with Molly and no amount of scrubbing could get the Molly out. I got that barrel back shooting abt. 1/2 moa. I have tried fire lapping on 4 or 5 other barrels and could tell no difference in group size. I would recomand that fire lapping be used as a last resort befor rebarrelling and action only. No gunsmith, but I do play with alot of guns.
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Catfish
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