Is there some sign, "poor accuracy" for instance, that tells you you should polish a barrel or is it something that should be done to increase the accuracy you can achieve that you were not aware of?
Barrel Polishing
- Thread starter dark1961
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Never have polished a barrel myself. Wouldn't hesitate to do so on a problem barrel but I would not touch one that was shooting well. JMO
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My experience has been to do it either in a barrel that is just not shooting well, or, in one that lead fouls excessively and is hard to clean (and probably not shooting well).
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What Ed said, and I just did a barrel that was shooting good that I thought should shoot better. I polished the barrel and the crown with JB bore paste and the results were amazing, the barrel now stacks pellets in the same tiny hole.
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That's the same thing I used on my barrel is JB bore paste. I bought two new .25 cal bore mops, removed my barrel and placed it in a padded vise. I applied JB generously to bore mop and stroked the barrel twenty to thirty times. Smoothing out the barrel will definitely help reduce fouling.
Zonk
Zonk
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Near every barrel on near every gun that passes threw the shop gets barrel lapping done. Tho not with JB paste but something far more aggressive that has proven to be ideal with MANY satisfied customers astonished by there guns accuracy after getting them back form Motorheads AG Tuning Services.
Not polished, but smoothed by removal of metal fretting, surface inconsistencies and then a hard wax applied to surface.
Only barrels that get left alone are CZ & BSA hammer forged, They may get some JB but nothing more.
Not polished, but smoothed by removal of metal fretting, surface inconsistencies and then a hard wax applied to surface.
Only barrels that get left alone are CZ & BSA hammer forged, They may get some JB but nothing more.
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I’ve also had good results with fire-lapping (I use fine valve lapping compound). I use a Qtip with the swab cut off to make a ‘stick’, dab some into the breech, fire 3 shots, repeat.
During the process, I’ll clean, inspect and check grouping. A sharpened pencil, pasted and chucked in a drill does a fair job of polishing crowns. Sometimes I’ll chuck a copper jacketed .30 cal bullet (no case or primer/powder!) for a tapered recrown.
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I used flitz on my LW barrel and it much easier to clean and I can go longer between cleanings.
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Polishing and Lapping can do wonders but it does need to be done in moderation, if you have a barrel that is fowling all the time then polish first and test your groups.
On my Black Powder guns I use fire lapping
a trick I use to see if is needed is to run a cotten ball through then a scope camera you will be amazed at the burrs you can see.
Be cautious with choked barrels Lapping can grind out some of the choke. And make sure to remove the moderator if you have one
On my Black Powder guns I use fire lapping
a trick I use to see if is needed is to run a cotten ball through then a scope camera you will be amazed at the burrs you can see.
Be cautious with choked barrels Lapping can grind out some of the choke. And make sure to remove the moderator if you have one
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I will run JB paste thru a new gun 20 or so times down and back. Upon a suggestion from a tuner, I no longer use a brush. ..I use a swab. I clean the paste out with Hoppes #9, then Ballistol, then dry...all with swabs. Then a couple of times with dry patches.
After that, only clean when it starts to shotgun. And general, I omit the bore paste. I consider whether there's potential for damaging the rifling when choosing to use it or not. If it's really fouled, yeah, but only ten or so round trips.
After that, only clean when it starts to shotgun. And general, I omit the bore paste. I consider whether there's potential for damaging the rifling when choosing to use it or not. If it's really fouled, yeah, but only ten or so round trips.
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