pistol barrel lapping?

Discussion in 'Gunsmithing Forum' started by chad2, Oct 10, 2010.

  1. chad2

    chad2 New Member

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    i have heard that barrel lapping can make your gun more accurate also it can help lessin wear on the barrel because it gets rid of the ruffness also making the cleaning process faster and easier. is this true? also can this work on a pistol barrel that is only 4in long?
     
  2. M14sRock

    M14sRock Active Member

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    Not necessary, Chad. Precision rifle barrels sometimes benefit from lapping, but a combat pistol should not need it.
     

  3. 207driver

    207driver New Member

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    Barrel break in

    Well, I did the Krieder break-in normally used on new rifles, on my S&W Mod 27 with an 8 3/8" barrel and saw a remarkable drop off in fouling and a reduction in shot spread (grouping) from about 7 inches on the first 5 shots to around 2 inches on the last 5 at 25 yards. I registered every shot from the first to the 25th. Of course the first 10 were days apart so sight picture variations could account for some of that spread, but the fouling dropped off significantly owing to a smoother bore. The gun is very accurate now--much better than I am with 6+ decade eyes, and I can't help but believe that much of that is due to the break-in routine. Also any leading and/or copper fouling is wiped out with a tight patch.
     
  4. cpttango30

    cpttango30 New Member

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    If you are buying a precision rifle barrel that hasn't been lapped it isn't worth the money you paid for it.

    as for a revolver. I highly doubt it will do any good.