bad barrel?

[swadiver]

200 or so rounds on this 12 twist 6BR barrel. not shooting worth a damn. check out the borescope pics of the throat area. the pics are all of one groove but the other grooves have similar but less severe marks. i thought it was just leftover reamer tool marks when i first looked at the barrel when un shot,, but this groove seems to be getting worse. in the larger pics direct from the borescope, the marks can be seen to be fairly deep. bad steel?

 

[Terry]

Powder & charge?

I have several Brux barrels many with several hundreds of rounds, none of them look like this.

 

[johara1]

Looks like you are loaded with carbon...... jim

 

[Martin52]

How have you been cleaning it ?

 

[Dub]

maybe failed to break in properly. looks loaded with carbon to me

 

[swadiver]

been shooting 80gr Bergers and 70gr Sierra Matchkings with N135 or a little AR-Comp. loads for the 80's have been moderate, 29 to 29.6 grs of N135 or 28.4 to 29 grs of AR-Comp. the Matchkings have seen 29.3 or 32.5 grs of N135.

 

[AckleymanII]

time to use some JB on that barrel.

 

[swadiver]

PMA tool boreguide, same stuff i use on all my barrels. been using Boretech C4 and Wipeout. barrel has never picked up copper. i have JB borepaste and Flitz bore cleaner, but i have never needed to use any abrasive cleaner on a barrel with 200 rds through it.

as for breakin, i shoot 5 light load rounds through it then cleaned with Barnes copper cleaner. got virtually no copper out of it. shot a few more rounds and did the same again. same procedure i have used on a bunch of barrels with no issues.

 

[Alex Wheeler]

Look like tool marks left from a rough throat. But I see nothing there that would stop the barrel from shooting. Theres not enough fouling in there to have an effect on accuracy yet in my opinion either.

 

[johara1]

PMA tool boreguide, same stuff i use on all my barrels. been using Boretech C4 and Wipeout. barrel has never picked up copper. i have JB borepaste and Flitz bore cleaner, but i have never needed to use any abrasive cleaner on a barrel with 200 rds through it.

as for breakin, i shoot 5 light load rounds through it then cleaned with Barnes copper cleaner. got virtually no copper out of it. shot a few more rounds and did the same again. same procedure i have used on a bunch of barrels with no issues.

How many rounds are through it to look like that? Do you shoot over different powder without cleaning?.... jim

 

[swadiver]

thanks all. i have changed the following to try and isolate the problem to no avail so far.

1) different action
2) different scope rail
3) different scope rings
4) different scope
5) different stock.

all the components involved have shot well with other barrels.

 

[swadiver]

How many rounds are through it to look like that? Do you shoot over different powder without cleaning?.... jim

just a little over 200, no on shooting over a different powder without cleaning. i may have to hit it with the JB Borepaste

 

[Nightraider]

Borescopes are the devil

 

[swadiver]

Borescopes are the devil

maybe true. i wouldn't care what it looked like inside if it would shoot

 

[johara1]

just a little over 200, no on shooting over a different powder without cleaning. i may have to hit it with the JB Borepaste

No what I mean is that the condition is in how many rounds since it was cleaned last..... jim

 

[Dub]

Borescopes are the devil

I prefer the barrel tell me through the target

 

[swadiver]

just cleaned before the pic. soaked overnight with wipeout, cleaned tht out and then soaked with C4. i use

 

[swadiver]

I prefer the barrel tell me through the target

that's what i have been saying, it doesn't shoot

 

[Clancy]

Have you called Brux? I’m sure they’d help you out.

 

[swadiver]

Have you called Brux? I’m sure they’d help you out.

i am going to do that i think. thanks