Lapping and Polishing barrels

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@FastEddie yes i have also tried pushing the pellets and it took some effort to push them through the breach. But the pellets came out the barrel without any damage.

@AZBOBCAT there are no clipping marks on the shroud end cap. I have also shot it removing the shroud end cap but the groups were still the same as with the cap. I am thinking of marking the inside of the airstriper with a black marker to check for clipping.
 
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Thanks AZBOBCAT. I'll try that.
hsnmz- was this picture with just the airstripper on?
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My groups were very good when I had the shroud and airstripper on with no end cap, but ours are different. Although there were no signs of clipping, the pellets must be just grazing the endcap enough to send them spiraling. I'm gonna do some more testing today
 
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You can open up the bore of an ldc, baffles, etc for the sake of eliminating clipping without that larger bore size making the ldc less effective. I have opened the bore on ldc's without having any impact on effectiveness of the ldc. If there was a change in sound, my ears can't tell.

I am sure there is a point when a larger hole will make the ldc less effective, but for trying to eliminate clipping, opening up the bore a small amount seems to have little to no detrimental effect. I have used a .30 ldc on a .25 that seemed to work just as well as an ldc made specifically for .25.
 
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This is awesome! You've got me wanting to try and polish my Vulcan CZ Barrel. I'll admit, I'm scared to do it though, but if there is a chance it will improve accuracy, then it is probably worth a try. My fear is it will make accuracy worse and there is no going back. AJ you should make a video of your process for us.

Thanks!
 
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I've seen the results of Aarons work and I'm a believer ! I polish my barrels as soon as I get the rifle in used or new .. I spent some time years ago at Shilen Rifles here in Texas .At the time a very popular aftermarket barrel maker . Anyway I always thought of a rifles barrel as something that you should be ever delicate with to prevent damage.
When I saw how they lapped ( polished ) a barrel I was shocked ! There were two Big guys pushing and pulling a gritty mop thru the barrel like they were hand sawing down a tree .
They used 2 different grits and them poured a strong solvent down the barrel to remove any left over compound and then squirted oil inside and went to the next one .
Mr Shilen said its almost impossible to damage a gun barrel by the normal owner as LONG as they don't damage the crown . The steel in gun barrels are tougher than most guys credit them to be . Yes an airgun barrel isn't subjected to the kind of pressures that a Powder Burner is but its still tough.
If your gun fouls to quickly , or just want to make sure you are getting the last bit of accuracy out of it why the hell not ??!!
I've never heard of a guy saying polishing his bore did anything negative . And its kinda cool when you finish seeing how shiny it is after your hard work .
 
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"JoeWayneRhea"I've seen the results of Aarons work and I'm a believer ! I polish my barrels as soon as I get the rifle in used or new .. I spent some time years ago at Shilen Rifles here in Texas .At the time a very popular aftermarket barrel maker . Anyway I always thought of a rifles barrel as something that you should be ever delicate with to prevent damage.
When I saw how they lapped ( polished ) a barrel I was shocked ! There were two Big guys pushing and pulling a gritty mop thru the barrel like they were hand sawing down a tree .
They used 2 different grits and them poured a strong solvent down the barrel to remove any left over compound and then squirted oil inside and went to the next one .
Mr Shilen said its almost impossible to damage a gun barrel by the normal owner as LONG as they don't damage the crown . The steel in gun barrels are tougher than most guys credit them to be . Yes an airgun barrel isn't subjected to the kind of pressures that a Powder Burner is but its still tough.
If your gun fouls to quickly , or just want to make sure you are getting the last bit of accuracy out of it why the hell not ??!!
I've never heard of a guy saying polishing his bore did anything negative . And its kinda cool when you finish seeing how shiny it is after your hard work .
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If the process removes enough material to make a noticeable difference to accuracy, is there not also the potential to make it uneven by applying too much pressure on one side etc? Or does that not matter?

is there any reason why they don't do it at the factory?
 
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