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1911 Help, Marks on Brass with Pic

Ingalls
I asked this awhile back but without a picture it was hard to get an answer. I am getting these marks on all my brass shot from a Colt 1991. The local smith says its the brass hitting the top of the ejection port on the way out. He he says the only way to stop it is to flute it. As I dig deeper into my spent brass box, I dont see these marks on all of the cases, which makes me think this is a new problem. I would like to reload these, but Im not sure if these dents will be safe/accurate.

[img][/img]dsc03087zbv.th.jpg


Sorry for the picture size, I thought I knew how to resize it.
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Comments

9 comments

Date Votes
  • CS8161
    I'm no expert..but could it be recoil spring issues? I have reloaded cases with dents like that with no problem, but I am loading lighter target loads, not full power. If this is a new problem, I would suspect the recoil spring is getting weak and causing the slide to cycle faster, throwing the empties out faster, causing the dent?
    This is just a theory, I'm sure someone with alot more knowledge will come along and answer your question.
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  • BigLoop22
    ...Imageshack: truncated, abbreviated & bizarro links! Here you go, cleaned-up link, BIG picture!:

    http://img22.imageshack.us/img22/4440/dsc03087zbv.jpg

    ===========================
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  • Hawk Carse
    Dented on the edge of the ejection port.
    The usual treatment is to lower the ejection port and "flute" the rear corner at the flat-to-radius transition.
    It is possible to control it a good deal by getting the extractor and ejector just right, if the gunsmith knows how and wants to tinker with it enough. Most would rather just start cutting metal.

    Or just load them back and shoot. The dents will iron right out when they get 18,000 psi inside.

    "My take: Case is being squished downwards onto the feedramp while the slide is pushing the round into the chamber."

    I thought of that, but all the Three Point Jam dents I have seen were more consistent in placement and size than these. Also, if the gun was slamming rounds that hard across the chamber mouth, I think he would be complaining about frequent malfunctions, not reloading cosmetics.
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  • rsnyder55
    I agree with Hawk. They look like the dents on my brass from hitting the ejection port.
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  • cwi555
    quote:Originally posted by Chris8161
    I'm no expert..but could it be recoil spring issues? I have reloaded cases with dents like that with no problem, but I am loading lighter target loads, not full power. If this is a new problem, I would suspect the recoil spring is getting weak and causing the slide to cycle faster, throwing the empties out faster, causing the dent?
    This is just a theory, I'm sure someone with alot more knowledge will come along and answer your question.


    I have to agree with you on this one. I had the same problem, and it was in fact a weakened spring at fault. There are several other causes, but in my particular case, it was the spring.
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  • perry shooter
    Hello Thanks for the pictures I remember your first post on this problem . First off those dents will not hurt a thing when it comes to reloading . Now for the problem I have learned to never say never when it comes to Firearm Problems but yours STILL looks to me as a feed problem Not an extraction and ejection problem or small ejection port. all dented cases I have ever seen with this problem bent the case mouth more then any other part of the case. . I think it is either a magazine problem not letting the case head up high enough as soon as it should or the extractor is set too tight not letting the case head slide up the Breach face of the slide. Of course my opinion is a minority one so YOUR MILEAGE MAY VARY[:p]My suggestion is to cycle a full magazine of this same ammo through the pistol by hand without firing and then look to see if they have even a slight sign of this type of dent . then do it again tis time after painting the nose of the bullet and this area of the case with a magic marker. Then looks for scrapes on the marked area.
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  • givette
    Get a strong magnifying glass..see any scrape marks in the area of the dent? Now, look real, real close at the feedramp..see any brass shavings on the ridge of the feedramp? If so to either, or both, it's a feeding dent, not an extraction dent.

    My take: Case is being squished downwards onto the feedramp while the slide is pushing the round into the chamber. Best, Joe

    EDIT-Info Added
    Simple test. Load magazine. Chamber rounds by pulling the slide to the limit, and letting the slide snap forward under spring pressure. Carefully pull the unfired rounds from the chamber. Inspect. Best again, Joe
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  • Ingalls
    Thanks for all of the responses. Ill try to hone in on each response. Perry Shooter got me thinking. My range has a rule that to limit your magazine to 5 shots at a time. I wonder if it does have something to do with the magazine.
    Also, I guess 18000 psi is a good way to get rid of the dents.
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  • stayathomedad
    IT shoudnt be a problom reloading them and the dents should come out in the resize die at least they do in mine.
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