K kc Well-Known Member Joined Jan 7, 2003 Messages 970 Location Swartz creek Mi Dec 23, 2010 #1 Have you ever lapped your barrel, what did you use and did it help?
J J E Custom Well-Known Member Joined Jul 29, 2004 Messages 10,718 Location Texas Dec 23, 2010 #2 Re: bore lapping kc said: Have you ever lapped your barrel, what did you use and did it help? Click to expand... Yes. I have lapped quite a few barrels.(Only the ones that were poor performers). I cast a broach/pill from plumbers lead and use 1200 and 1500 grit garnet(Non embedding) I only lap enough to smooth out the bore and make it uniform. (Excessive lapping can ruin a barrel so be sparing with the lapping. Normally I inspect with a bore scope to determine what the problem is and only lap until it is resolved. If done correctly ti will normally break in faster and will increase the velocity over the rough barrel. This process is not recommended for the high end custom barrels because of there quality and in most cases they have already been lapped. J E CUSTOM
Re: bore lapping kc said: Have you ever lapped your barrel, what did you use and did it help? Click to expand... Yes. I have lapped quite a few barrels.(Only the ones that were poor performers). I cast a broach/pill from plumbers lead and use 1200 and 1500 grit garnet(Non embedding) I only lap enough to smooth out the bore and make it uniform. (Excessive lapping can ruin a barrel so be sparing with the lapping. Normally I inspect with a bore scope to determine what the problem is and only lap until it is resolved. If done correctly ti will normally break in faster and will increase the velocity over the rough barrel. This process is not recommended for the high end custom barrels because of there quality and in most cases they have already been lapped. J E CUSTOM