Gouges/Lapping new barrel?

[jpjulian]

deertroy1.......... Go shoot......

 

[LVLAaron]

The barrel manufacturer seems to think it was done with an indicating rod (the gunsmith who did the work is very good but as was stated; mistakes happen).
It can't be shortened without it looking stupid. It's spiral fluted.
I was wondering about JB Bore Paste. I've never used it on a custom barrel but at this point I guess I have nothing to lose.
Fire once, clean with JB, fire again more JB and see what happens.

Put some rounds through it. You'll clean up any burs, if that's what they are, at lot faster and easier than abrasives. Then clean it and check it.

Step one of doing a barrel for someone, is scoping it. Preferably while they're standing there watching.

 

[Judd]

Not sure what you’re seeing but turning our indicators inside the barrel can put a line all the way around. A buddy told me a few weeks back he’s started using indicating rods when cutting muzzles because the bore scope guys were complaining about the lines and attempting to blame them for ill shooting/tuning.

Back to Dave’s…don’t do things to make the phone ring.

 

[DaveTooley]

I use 5 tenths under Gage pins dialing in muzzles.

 

[jackieschmidt]

You cannot lap that out without increasing the Land and groove diameter diameter to an unacceptable level.

I have no opinion how that got in there, only to say it should not be in there.

It could have peen present in the original blank. I find it difficult to believe it could have happened during the chambering proccess.

 

[deertroy1]

The barrel manufacturer thinks it was done with an indicating rod?

Right

Correct

 

[deertroy1]

We'll. I guess I'll just shoot it and see what happens. Hopefully the burrs get removed from shooting. I'll report back but it's going to be awhile. There's too much snow to get to the range and the forecast has more on the way!

 

[tobnpr]

Borescope a Savage barrel that'll usually shoot 1/2-3/4 minute or better outta the box...
It'll give you a different perspective about how much some of this doesn't translate to anything at the target.

 

[LVLAaron]

Borescope a Savage barrel that'll usually shoot 1/2-3/4 minute or better outta the box...
It'll give you a different perspective about how much some of this doesn't translate to anything at the target.

Here's what my savage barrel looks, in ascii art.

loading end |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| loud end.

One of the best shooting barrels I've had.

 

[sep]

Shoot it first before you do anything. I bought a Weatherby MKV Accumark in 30-06 that looked pretty bad about 6 inches from the muzzle. Turned out to be the best shooting 30-06 I have ever owned.

 

[deertroy1]

I've had a few Savages and rifles with nasty looking bores. I never had one that took me two days to get the copper out of after just one shot!
Anyway, it's going back to the rifle builder. He has a lot less snow. He'll try twenty or so rounds through it and see what happens.

 

[swd]

The barrel manufacturer seems to think it was done with an indicating rod (the gunsmith who did the work is very good but as was stated; mistakes happen).
It can't be shortened without it looking stupid. It's spiral fluted.
I was wondering about JB Bore Paste. I've never used it on a custom barrel but at this point I guess I have nothing to lose.
Fire once, clean with JB, fire again more JB and see what happens.

Ask the gunsmith if he uses indicating rods. Many of use long reach dial indicators and not rods. At least it might out that question to rest, or not..

 

[gunsandgunsmithing]

Might seem irrelevant, but some pics of the throat may tell us more. Any copper there?

 

[deertroy1]

Might seem irrelevant, but some pics of the throat may tell us more. Any copper there?

The only area that had any copper after I cleaned it and let it soak with Bore-Tech Eliminator overnight was the area near the muzzle that had the burrs/scratches. The rest of the barrel, including the throat, looked pristine.
The barrel manufacturer has agreed to inspect it.

 

[gunsandgunsmithing]

The only area that had any copper after I cleaned it and let it soak with Bore-Tech Eliminator overnight was the area near the muzzle that had the burrs/scratches. The rest of the barrel, including the throat, looked pristine.
The barrel manufacturer has agreed to inspect it.

Very often, fouling you see near the muzzle came from a rough throat. That's why I said what I did. If the jacket gets damaged in the throat area, that copper becomes suspended in the gas, that becomes a plasma as it also carries metal. As the pressure and flame temp drops nearer the muzzle, the copper then gets left near the muzzle. Often described as a copper wash look. Custom lapped bbls are seldom the root cause of copper fouling, as counterintuitive as it seems.

 

[Clancy]

I’d just shoot it. Shoot 25 rounds then clean it again. I seldom see a barrel ever get as dirty as it does after the very first shot. Lots of times, I’ve seen it color the inside copper, and then after the second cleaning, never see more than a few specks again. I don’t even use a copper solvent anymore. Strictly boretech C4 and bronze brushes. Never been happier.

If it takes more than 30 minutes to get copper out of a barrel, either your solvent has gone bad or you’re not brushing enough.

Those little micro abrasions are fairly common from indicating rods. They'll smooth out.

What’s it chambered in? Did I miss that?

 

[ArtinNC]

After all of this ---- Your head is missed up about this barrel , and every bad shot you will blame it on the barrel and not you . Just put a new barrel on it and DON'T use a bore scope till after you have shot it a few times..