Chamber scoring the back of the cartridge

R

RSG223

Active member
I bought my son a new rifle (Savage 110 Predator) and today we were fiddling with it and chambered an empty cartridge from my gun (also a .223) and when I pulled the brass out it was both difficult to extract and had a score near the back of the brass about .25" long.

I see they sell a "Flex hone" and was wondering if I should consider getting one? The other thought I had was to take an empty cartridge, trim off the front of the brass and thread the back to adapt to a rod, then use a fine lapping compound and carefully hone the back end of the chamber.

Any thoughts would be appreciate. I won't do anything until I am completely understanding what the issue is and how to correct it.

Thanks in advance
 
RSG223 said:
I bought my son a new rifle (Savage 110 Predator) and today we were fiddling with it and chambered an empty cartridge from my gun (also a .223) and when I pulled the brass out it was both difficult to extract and had a score near the back of the brass about .25" long.

I see they sell a "Flex hone" and was wondering if I should consider getting one? The other thought I had was to take an empty cartridge, trim off the front of the brass and thread the back to adapt to a rod, then use a fine lapping compound and carefully hone the back end of the chamber.

Any thoughts would be appreciate. I won't do anything until I am completely understanding what the issue is and how to correct it.

Thanks in advance
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I did the exact same thing on a 1911 I built, I bought a 45 match barrel and the chamber was way to tight. It worked perfect I used grease and coarse first then fine. I also used it on the side,frame shooting maybe 20 rounds then clean, inspect, reapply. After around 100 rounds it was smooth as glass. I also use the same "trick" for polishing the bolt lugs on my Savages. Just take your time it will buff out. Good luck to you. You could probably use a small shotgun brush on a cleaning rod if it's not to bad.
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RSG223 said:
chambered an empty cartridge from my gun
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Before doing anything, you should fire the rifle and see if it marks the case. Your rifle may have a slightly oversized (but within spec) chamber and his may be extremely snug (Very common). Obviously your fired case fit tight in his chamber as indicated by the difficulty in extraction. If it marks the brass fired in his rifle, then you can polish out the chamber, lightly.
 
If the chamber has a burr somewhere, and you use something "soft" to polish it, that will largely follow the irregular shape. I would mount a 223 case on a section of cleaning rod. Then spray some spray adhesive on some 600 wet or dry paper. Cut a narrow strip & stick it down 1 side of the case. Turn it by hand a few turns & check fit. That way should only remove any high spots. Go slowly.
 
Thanks for the replies fellas!

I took the gun back to the shop and they looked at it. They figured it's some sort of metal (like bronze) that has welded it's self to the side of the chamber. They were successful in removing it but it left an imperfection. Long story short they weren't comfortable with that and as such gave me a new one. We inspected it right there and it was good to go!

The smith said he's ever seen anything like it with that burr!
 
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