Ejected Brass

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Ejected Brass

Post by BE Mike on Fri Jan 16, 2015 11:41 am

I have been shooting a fairly new to me, Springfield Armory 1911. It has a heavy recoil spring, advertised as 17#, but feels significantly heavier. The pistol functions well, but today, when I inspected the fired brass, I noticed an indention mark left on the rim of the cases. I used a felt tip marker to make the area stand out. My questions are 1. What is causing this mark? 2. Is it something to be concerned about?


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Re: Ejected Brass

Post by Jon Eulette on Fri Jan 16, 2015 12:05 pm

My guess is the boltface on slide has a large machine mark. It's leaving the mark on the case when it's fired. I would guess if you chambered a round and then hand ejected it that it won't have the mark in it. Bolt face can be stoned/polished.
Jon

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Re: Ejected Brass

Post by expendable on Fri Jan 16, 2015 12:24 pm

I think Jon is right.
I had a Ruger SR1911 that did the same thing, there was a step in the bolt face that was left after it was machined. 

Kurt

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Re: Ejected Brass

Post by Bubba Blaster on Fri Jan 16, 2015 1:35 pm

Jon is correct !   I bought a 45 ACP Range Officer and it did the same thing to the brass. I took a small tool makers file and removed the material off the bolt face opposite the extrator.

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Re: Ejected Brass

Post by BE Mike on Fri Jan 16, 2015 1:45 pm

Thanks. Yes, you all are right. The mark on the case was fairly deep, so I thought I'd have noticed the "ledge" on the bolt face (opposite from the extractor) before. It was easy to see when I saw it with magnification (these old eyes aren't what they used to be). I've been slowly removing the "step". Although, I wish that they had caught it at the factory. Probably just cosmetic, but it bugged me.

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Re: Ejected Brass

Post by Jon Eulette on Fri Jan 16, 2015 1:49 pm

It should be fixed,  it will force your cartridge off center of bore axis.
Jon

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Re: Ejected Brass

Post by Deerspy on Sat Jan 17, 2015 12:36 pm

and it damages the brass rim ( bends case rim ) at least it did on one I had take hump off of bolt face all is well now.Laughing

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Re: Ejected Brass

Post by BE Mike on Sat Jan 17, 2015 1:02 pm

Deerspy wrote:and it damages the brass rim ( bends case rim ) at least it did on one I had take hump off of bolt face all is well now.Laughing
Yes it does, but in this case, not enough to affect reloading.

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Re: Ejected Brass

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