Pacnor 45 barrel suddenly got a couple rough spots.

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Here is the update. Just got back from 2 weeks in Florida and was ready to tackle this issue.

Top Picture is original.

Next picture is after 200 strokes with copper wool.

Last picture is after using a brass jag that I turned in a drill to just fit the barrel. I also used some bore paste on the jag and tried the copper wool again. I sharpened the front edge of the brass jag and when it hit the blob, I tapped it lightly with a hammer. You can see int the picture where the rifling cut into the Jag so it is a tight fit. I kept doing this about 15 times. I think it removes a little each time but it is slow going.

Any Ideas appreciated. I will probably just keep doing the same. This barrel shot 240 Fury real good with a sabot even with the bump so I always scan shoot that load. I can feel the barrel is a little tighter at the muzzle and I think that is desired and I don’t want to screw that up.


mbf90Fr.jpg

NjlrUpf.jpg

Au1B7Yt.jpg

lDKIR4L.jpg
 
Here is the update. Just got back from 2 weeks in Florida and was ready to tackle this issue.

Top Picture is original.

Next picture is after 200 strokes with copper wool.

Last picture is after using a brass jag that I turned in a drill to just fit the barrel. I also used some bore paste on the jag and tried the copper wool again. I sharpened the front edge of the brass jag and when it hit the blob, I tapped it lightly with a hammer. You can see int the picture where the rifling cut into the Jag so it is a tight fit. I kept doing this about 15 times. I think it removes a little each time but it is slow going.

Any Ideas appreciated. I will probably just keep doing the same. This barrel shot 240 Fury real good with a sabot even with the bump so I always scan shoot that load. I can feel the barrel is a little tighter at the muzzle and I think that is desired and I don’t want to screw that up.


mbf90Fr.jpg

NjlrUpf.jpg

Au1B7Yt.jpg

lDKIR4L.jpg
Looks to be working.....think id save the bore paste for later though.....
 
Have you alternated directions with the jag , breech, muzzle, breech, muzzle,?
 
I had the same problem, when it came back I had a triple post???
 
Round # 3- I tapped he jag by the bump both ways. Then I would turn it 1/6 turn and repeat six times until all the lands were covered by this process. Then I sharpened both ends of the jag. I repeated this process 3 times. I then sharpened the back of a Barnes 275 XPB and tapped it down the barrel. I turned the bullet and repeated 3 times. If you look at the picture of the Barnes you can see where the bump scored the bullet every time I turned it. By the picture it doesn’t look like it did much to the bump in the barrel. It seems like the copper or brass is too soft to do much. I think I might just try to shoot it with sabots and if it still shoots good, just live with the bump. I will post the target when I get time to shoot.


Fldnp4A.jpg
6PMvIRK.jpg
 
In the 3rd pic it looks like a piece actually broke free. Its looking to me like its 2 or more deposits on top of each other. If you have some thing harder than brass you should keep after it.
 
In the 3rd pic it looks like a piece actually broke free. Its looking to me like its 2 or more deposits on top of each other. If you have some thing harder than brass you should keep after it.
You got a steel rod ??? If so be carefull !!! I would not leave it . If that comes loose while shooting and gets draged along by bullet or sabot youll have a real mess . IMO better in 1 spot to possibly be hurt than half the barrel .
 
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Does it still have a couple of bad spots or did one leave?
 
Mysterious for sure. I wander if the barrel manufacturer has encountered this before?
 

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