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?