View Full Version : Burr in The Barrel
cenote811
12-30-2009, 10:41 PM
While cleaning my 18.25" Cetme Barrel, I discovered some lint from my swab hung up on a "burr" (?). I ran the brass brush through it and removed the lint, but discovered with the aid of my light what appears to be a burr. This burr as best as I see looks like the tip of a very small needle vertical to the inside of the barrel. Located about three quarters down the barrel from the muzzle break. Any help or suggestions you guys can give, sure would appreciate it.
1. How do I remove the burr?
2. Can a gunsmith remove the burr with a bore reamer?
3. If the burr can be removed, will a reamer or other method damage my barrel lands and groves?
4. From what I see, I do believe this burr has effected the bullets I fired, I believe this burr maybe "scoring" the bullets and adversly effecting the bullets flight and it's accuracy.
Smokehouse69
12-30-2009, 10:52 PM
The first time you shoot it, it'll be gone! I had a DTI barrel that had a burr where the gas port was drilled. I tried everything to get it out. I shot it once and it was gone! :thumbup:
rustypirate
12-31-2009, 07:40 AM
Is the burr 3/4 down the length of the barrel from the muzzle, as in 1/4 up from the chamber, or is it 3/4" from the muzzle?
cenote811
12-31-2009, 08:22 AM
Thanks Smoke and Rusty: I fired about 10 rounds through the barrel and discovered the burr afterwards, so the 10 rounds fired didn't remove the burr. Rusty, say about 1/4 up from the start of the leade, above the firing chamber.
HKILLER
12-31-2009, 03:42 PM
Just shool it lol
cenote811
01-01-2010, 10:59 AM
Upon taking a closer look, it looks like a piece of land is turned up into the free space of the barrel interior, close to where the leade ends and the lands begin. Could be the prior owner shot too many over pressured rounds and fouled this portion of the barrel. I checked the barrel before I bought the rifle and did'n catch the defect. ******** happens and the world turns. My concern is, if I shoot again without fixing the problem and a piece of this metal might become wedged by the bullet, I might get a squib or rupture the barrel, which could be somewhat dangerous. I am going to take it to a smith, have him look at, remove it, then hand lap the full barrel. The Cetme was designed by Vorgrimmler to shoot a 7.62x51, 147 grain Nato round. Some say different and shoot just about anything, but I'm not sure that's a good way to go, based on my experience. Just my thoughts.
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