Bent shell casing
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Old 02-18-2013, 02:45 AM   #1
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Default Bent shell casing

Can anyone tell me why I'm getting bent casings.
Colt 1911 series 70.

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Old 02-18-2013, 03:31 AM   #2
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I have seen it but with 5.56 MM fired through an M249

My question with your S70 would be if it happens with all of your magazines?

I suspect you may have an older mag that sits a bit to deep in the mag well and your fired, and very hot spent casing is being drug along the leading edge of the top round in your mag producing the deformed casing in your picture.

So... Are you seeing it with all your mags? Or just one?

If ^^THIS^^ is the case, you will notice much more deformation on the first few rounds fired and it will get less severe as the mag runs empty due to the reduced "up force" on the leading round in the mag.

Tack

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Old 02-18-2013, 04:04 AM   #3
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I have only one mag. So I don't know. Can I adjust the lips on the mag or just a few new ones?

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Old 02-18-2013, 04:12 AM   #4
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Quote:
Originally Posted by rrussell250 View Post
I have only one mag. So I don't know. Can I adjust the lips on the mag or just a few new ones?
Lips can be adjusted but reliability trumps dented brass... And I dont think adjusting the lips would solve the problem... Which... Unless you reload, really isn't a problem, as much as it's a "curiosity".

Personally, I've had great luck with Wilson Combat 8 round mags and run them in all my 1911's.

Several other "slab siders" here swear by both Chip Mcormic and Tripp 1911 Mags.

I'd say to pick up a couple of new mags and see if it eleviates the problem.

Tack
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Old 02-18-2013, 04:45 AM   #5
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Look at your gun. I would almost bet you money there's a golden smudge somewhere near your ejection port. If so, your brass is ejecting improperly. You'll need to have the extractor tuned, I believe it would be holding the casing too tightly.

Where does your brass land? 5 o'clock position and nearby?

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Old 02-18-2013, 09:08 AM   #6
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rrussell, I have owned and carried Colts for many years, carried them in mlitary and LE and am a LE Colt armorer. The dent has nothing to do with magazines, the case is hitting the ejection port on it's way out. This happens with Series '70 and earlier commercial Colts, military 1911s, 1911A1s, etc, and any others, that don't have the lowered ejection ports we're all so used to now days. If you're not a reloader,it means nothing, if you are a reloader, the case dent will be ironed out during the reloading process. Even the newer guns, with lowered and/or flaired ejection ports, may occasionally dent a case. If the gun functions normally otherwise, nothing is wrong with your gun.

Yes, you can start adjusting the extractor, change or reshape the ejector, etc. to prevent this. If you do, you may find that the brass will be ejected in more of an upward and backward path, possibly into your face on occasion, that extraction and/or ejection may become unreliable, etc....

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Old 02-18-2013, 01:25 PM   #7
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Thank you all for the great info.

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