.223 chamber cleaning(bolt action)

[josebd]

i have a shilen select match .223 barrel,ive just noticed after firing some rounds,there is a spot close to the end of the shoulder that shows a indention,ive looked at all the brass ive shot through this in the past 50 rounds or so,and its in the same spot on every one.
i need to know how can i remove it from the chamber? bronze brush?or should i just leave it alone?just dont like seeing it there!

 

[rmist]

Re: .223 chamber cleaning

A bronze brush won't remove any metal from your chamber. Is it a raised in the chamber or like a depression? If raised it could be removed not so if a depression unless you have it re-chambered.

 

[watercam]

Re: .223 chamber cleaning

I had a Winchester 70 in .375 H&H that had a similar issue. Looked like there had been a shaving or some such left in the chamber and when I fired it a few times it became more or less permanent. I used a rental finishing reamer to VERY carefully remove most of it then polished out the tiny bit that remained. Obviously I now make sure and clean the chamber as well as the barrel before firing a new firearm. Of course if the offending junk was in there when the barrel was proof tested the damage would have been done.

 

[Scott Harris]

Re: .223 chamber cleaning

It could just be a chunk of debris. Put a chamber brush on a drill, put some iosso on the brush and spin it for a few seconds in the chamber.

 

[josebd]

Re: .223 chamber cleaning

It must be raised,it leaves a little round indention on the brass, never noticed when I first starting shooting it,I don't guess it will hurt anything

 

[Dusty Stevens]

Re: .223 chamber cleaning

Is it a flake of powder thats now ironed into the chamber?

 

[Brians356]

Re: .223 chamber cleaning

It could be carbon buildup. (Better call EPA. They'll send a HazMat team right over.)

Try a 25-cal bore brush, inserted until you feel it resist entering the 22-cal bore, then back it out a tiny bit to clear the lands, and spin it. If a bronze brush doesn't dislodge it, you'll want to take it to someone (e.g. a gunsmith) who has a bore scope.

 

[MrMajestic]

Re: .223 chamber cleaning

Little losso on a case fired in the chamber and spin with something, just brain storming even if it is only a sprinkle!

 

[Brians356]

Re: .223 chamber cleaning

Little losso on a case fired in the chamber and spin with something, just brain storming even if it is only a sprinkle!

That's an idea, but not sure I'd want to introduce abrasive compound in there. If it's aggressive enough to wear away a deposit of unknown composition, it could also wear away some clear chamber wall as well. If a bronze brush doesn't dislodge it, I'd want a close look at with a scope before getting more aggressive.

 

[josebd]

Re: .223 chamber cleaning

im gonna post some pictures of some brass,i noticed that not all of them have the indention

 

[Lapua40X]

Re: .223 chamber cleaning

Anyone vote for a bore scope inspection?

 

[Brians356]

Re: .223 chamber cleaning

Anyone vote for a bore scope inspection?

If one is readily available, and not expensive to avail of, sure. Why not?

If you drop a well polished clean case into the chamber with an attachment that will allow you to turn (spin) it you should be able to see a mark/scratch around the circumference of the prepared case if there is a raised area on the surface of the chamber.

A Hornady L&L Headspace [sic] tool (the straight axis version) is made to order - if a modified brass case is handy.

If the debris will dent the necks, then that's good enough to prove to me, anyway, that it's there. How it could dent only some of the necks is a different mystery.

 

[josebd]

Re: .223 chamber cleaning

I shot 20 rounds the other day,the last 5 define try had the indention,but before that there was 5 or 6 that looked good,as soon as I can post the pics,it looks like the indentions are not the same?

 

[Brians356]

Re: .223 chamber cleaning

I shot 20 rounds the other day,the last 5 define try had the indention,but before that there was 5 or 6 that looked good,as soon as I can post the pics,it looks like the indentions are not the same?

Ok, if the first did not have it, then the last 5 did, it means the debris must have appeared then and there. And I would not expect every dent to be identical if the debris is floating around (i.e. not hard and adhered.)

Are you running reduced load by any chance? Or a really slow powder?

 

[josebd]

Re: .223 chamber cleaning

but it seems to be in the same spot

 

[josebd]

Re: .223 chamber cleaning

 

[josebd]

Re: .223 chamber cleaning

pics posted

 

[jlow]

Re: .223 chamber cleaning

I’ve seen this before…. If this is a gas gun like an AR then there is a good chance that it has nothing to do with the chamber but the dent is the brass hitting the brass deflector as it exits the chamber.

The way to avoid this is to put a bit of soft black calking on the ridge of the brass deflector so that it softens the blow.

 

[josebd]

Re: .223 chamber cleaning

bolt action

 

[acloco]

Re: .223 chamber cleaning

Shotgun bore mop with some flitz or similar FINE metal polish. Low or variable speed drill will be your new friend.