Help needed: "scratches" in the chamber

[Deniscka]

I was cleaning my 11 yo 1911 today and noticed that there are some sort of "scratches" appeared on the top of the chamber (please see attached).
I just put 100 of wincheser white box and 250 blazer aluminum case through it with just one hitch due to one round not chambering due to being deffective, otherwise it was OK. I never had any rounds "explode" in the gun. I did judt get the gun from the smith, but his work had nothing to do with the barrel.

Does anyone have an idea how could have this happen and does it/will it affect the function?

Thank you.

[epwegmann]

There's nothing attached....

[Deniscka]

Oops - fixed.

[bountyhunter]

That looks bad. Shooting steel jacket ammo? Something is tearing up the inside of the throat as the round chambers up. Could also be a barrel fit problem, but something is wrong.

[tophatjones]

Can you take some more photos with the macro setting?

[Deniscka]

I never steel jacketed ammo. I did leave a gun for two weeks with the gun smith/shop, but he comes very highly recommended and the work had nothing to do with the barrel.

Barrel fit problem? Can it develop over time? I had this gun for 11 years and to the best of my knowledge this has just appeared.

I will try to take more pictures

[epwegmann]

Hmm, that's not quite what I was expecting to see. I'd maybe wait for those more knowledgeable to chime in.

[SkyHawk]

Hard to tell if it is scratches, pitting, or worn plating. Can you take a pic in focus and post it? Maybe use your camera macro setting to get a close up.

[Deniscka]

here are more pictures

[Rgarbarino]

11 years old? Looks like some sort of corrosion to me. You've just noticed it now and are positive it hasn't been there a while?

[tophatjones]

Wow that looks bad. Run your fingernail over the area, do you feel gouges?

[G. Freeman]

May I ask what brand 1911 is that? At any rate it does look bad. Those marks don't occur in the normal course of shooting or even cleaning a pistol.

Those marks don't belong to any good brand 1911. Foreign cheap 1911's, possible.

Were the marks there before it went to the smith?

[epwegmann]

Looking at the detailed pics, really leaves me scratching my head. I can't imagine bullets doing that to steel. Even the steel in steel-cased ammo is too mild to do it.
It might be a longshot, but your feed ramp looks to be off center quite a bit. It may be possible your chamber is out of spec possibly causing an incomplete seal?
What is the make of the 1911? If it has a lifetime warranty, perhaps send it in?

[tophatjones]

Has this gun been cleaned regularly, or has it been years? If it has been a while, it could be pitting. The rust could have been building in those spots for a long time, then when you shot and cleaned it last, the rust was removed to reveal pitting. It might work fine as is, but if it were me, I'd replace the barrel.

[toddh]

My guess is that somebody gouged it with a tool...repeatedly.
The only other time I've seen marks like that, somebody used a steel rod on a stuck squib, and it dented the rifling n the barrel.
Yours in in the chamber...so maybe a stuck shell at some point ??
The chamber does have a tolerance, so you still might be able to have it cleaned up by a quality gunsmith.






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