Chattered Barrel any suggestions?

[Peter M. Eick]

What can be done about this type of chattering in the barrel?

My guess is replace and refit.

This is the smoothed up version after a fair amount of lapping with JB bore paste. I have hit the limit of what I think I can do and the gun still shotguns by my standards.

I don't want to go into specifics since I don't want this thread to turn into a slander of a brand.

I will say it is a 38 Super 1911 barrel and the pictures were taken from the front looking into the barrel. This problem goes right down to the chamber.

 

[barnbwt]

I think that would be a 'return to sender' if there ever was one. Yowza! Unless it's an old gun, in which case I'd ponder if it could be pitting or a doofus cleaning with a steel brush+ power drill

TCB

 

[Kp321]

Wow! That's terrible. If you have hit it with JB, I don't see another option except replacement if it doesn't shoot.

 

[BBBBill]

If it is a "quality" brand, shame on them for shipping something like that. If it is a "budget" brand, I've come to expect such. Sad that it seems to be the way things go these days.

 

[rcmodel]

It looks more like heat erosion from a gazillion rounds through it then tool mark chatter.

How much has the gun been shot?

rc

 

[GLOOB]

It doesn't look like bore-lapping could hurt, now. Have you slugged the bore? You might be able to find a certain mold or brand of bullet that will shoot. Perhaps a 357 bullet of the right profile will work. Assuming whoever shoots this is a reloader of 38 Super.

 

[barnbwt]

"What can be done about this type of chattering in the barrel?"
Make a 39 Super wildcat? How close is the next caliber up that you'd be interested in? If it's only a few 10 thousandths, there's a good chance the rifling could be salvaged.

TCB

 

[Jim K]

Erosion doesn't look like that, plus there is no sign of wear or erosion on the lands. Even if it shoots, that barrel will be impossible to clean. I would return the barrel, though you probably should have done that before trying to correct the problem.

(Note: When a problem is found in a new gun (or any other product), do not attempt to fix it yourself. Doing so voids the warranty and allows the maker to claim that you caused the problem. Return the product to the store or to the maker ASAP or forget about having it fixed at no cost to you.)

Jim

 

[natman]

Return it under warranty if that's an option.

If not, then this is way beyond JB paste. You need to lap that puppy with some real abrasive, at least relative to JB.

http://www.midwayusa.com/product/646612/wheeler-engineering-bore-lapping-kit

I'd make a hand lap because that is going to need some work.

The silver lining is that 1911 barrels are readily available and relatively inexpensive.

 

[Drail]

Time for a new barrel. If that is actually "chatter marks" from the manufacturing process it should have never got out the door.

 

[PRD1]

That is...

a broach-rifled barrel - the broach was either not properly sharpened, properly lubricated for its passage through the bore, or both.
This is, unfortunately, not rare, but it is proof of poor quality control exercised by the manufacturer.
The barrel should be replaced by the manufacturer.

PRD1 - mhb - Mike

 

[Peter M. Eick]

Many questions.

1) How much fired? Essentially NIB when I got it. Probably less than 50 shots out of it since no marks on the breech.

2) Yes it is a name brand (big brand) but as the second owner they would do nothing for me. They offered to put a new barrel in for their going rate.

3)The gun itself is a 80's vintage. Beautiful looker but it has been a headache.

Sounds like off to a new barrel and while I am at it a trigger job and such. Thanks for the advice.

 

[Steel Horse Rider]

My guess would be that the broach was getting very dull when the rifling was cut.

 

[Peter M. Eick]

Thanks. I am starting to look at smiths in Houston to put a barrel in it. Since Briley is close by I will probably hit them up for it. They are easy to work with.