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simple solution for chamber polish and cleaning?

 
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  #1  
Old 09-22-2012, 02:52 PM
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simple solution for chamber polish and cleaning?

All my best groups came from unfired, and I'm sure I just found why. Every case, after firing has a pinpoint dent near the shoulder. I'm guessing debree is now bedded pretty firmly in the chamber after a couple hundred firings. I actually noticed it on a few reloads months ago, and assumed it was a dirty sizing die. I cleaned it up and forgot about it 'til now. Any suggestions to get it out?
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Old 09-22-2012, 05:15 PM
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Re: simple solution for chamber polish and cleaning?

May or may not work....

I had a 308 FL sizing die (RCBS) that I stuck a case in real bad and had to resort to serious removal as in digging it out. It was a bit chewed up in the bore so I took a respectively sized bore mop and some Clover lapping compound, put some on the mop and chucked the mop in my trusty 18Volt Dewalt drill and went at it on the die, polishing it in a cross hatch fashion (like a cylinder bore). It's actually better than new now. like a mirror inside. Added benefit is the die sizes easier (though I don't forget to lube cases) either.....

That might work in your chamber as well.
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Old 09-22-2012, 05:29 PM
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Re: simple solution for chamber polish and cleaning?

I tried a similar method with polishing compound. I will have to wait to shoot it to see if it helped. If not, I may try lapping compound. I was a little hesitant to put lapping compound in there. I suppose it would take more effort than I am willing to put forth to change chamber dimension, correct?
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Old 09-22-2012, 07:59 PM
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Re: simple solution for chamber polish and cleaning?

Absolutely. Lapping compound, especially in finer grits, is nothing more than a final polish. It won't dimensionally change that chamber. It will, however, smooth tooling marks. It might actually make extraction and chambering easier. No guarantees but it might.

After I 'operated' on the die, I ran a freshly deprimed once fired and tumbled bright cartridge through the die and had serious lines imparted in the brass from my 'operating' on the die. After running the mop/lapping compound in the die bore a minute or two, I tried another cartridge and it resized clean and free of marks.

I'd never recommend it as a regular cleaning regimen but one time, no issue.

Make sure whatever you use, you clean it all out of there. I clean my bores and chambers with non-chlorinated brake cleaner is spray cans. It's haf the price of the gun store stuff and I think the only difference is it don't have a citrus smell.

I got tuned into brake cleaner because I shoot indoor target pistol, mostly tricked Rugers and Rugers are a royal PITA to strip so SOP is to pull the grips and hose 'em down with brake cleaner. I do my Kimbers and Wilsons the same way.
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Old 09-22-2012, 08:17 PM
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Re: simple solution for chamber polish and cleaning?

SidecarFlip, would putting a little but of iosso on a bore mop and attaching it to a drill work? If so, i might try it in my dads 338 Lapua as it think it has a rough chamber.
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Old 09-22-2012, 08:34 PM
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Re: simple solution for chamber polish and cleaning?

It should. Polishing compound and lapping compound is basically the same, just lapping compound suspends the abrasive grit in a grease (pertoleum) base.

...and we all have bore mops or at least most of us........

Just take your time and don't crank up the drill motor rpm, why I use my DeWalt. It's varible speed.

Don't fprget to clean everything well afterward.

Wish I was your age again, I'd do a bunch of stuff differently.
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Old 09-22-2012, 08:39 PM
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Re: simple solution for chamber polish and cleaning?

Quote:
Originally Posted by SidecarFlip View Post
It should. Polishing compound and lapping compound is basically the same, just lapping compound suspends the abrasive grit in a grease (pertoleum) base.

...and we all have bore mops or at least most of us........

Just take your time and don't crank up the drill motor rpm, why I use my DeWalt. It's varible speed.

Don't fprget to clean everything well afterward.

Wish I was your age again, I'd do a bunch of stuff differently.
Ok, i will probably give it a go after tomorrows shooting session. How did you attach it to your drill?
__________________

I'm 16
"Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth."
~George Washington

"The only advantage a light rifle has is weight, all other advantages go to the heavy rifle."
~ JE Custom

Biggest fail of 2014 so far... http://www.longrangehunting.com/foru...ea-ftf-128972/

My guess on W3P .308 230 Grain Bullet: G1 .740-.755
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