oowder residue on brass out of ultra carry - Kimber Forum

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Old 05-09-2019, 02:41 PM   #1
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oowder residue on brass out of ultra carry

Greetings:

I took my Kimber 45 ultra carry out today shooting Winchester white box. Put about 50 rounds through her and most, but not all of the brass ejected looking like this. When I cleaned this piece later, about the only thing I would call abnormal for this gun is the mag well had some of this same residue, enough to get a patch dirty with it. This never happened shooting this weapon before, have had it for years, pretty much when they first came out. Other than this all 50 today shot well all 5's on a qualification target at anywhere from 30 down to 5 yards.

Would swapping out the stock grips with a set of Kimber store walnut grips have anything at all with this? Cannot imagine but that is the only thing different from the last shoot.

Appreciate anyone's comments.
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Old 05-09-2019, 02:56 PM   #2
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Mrpski, welcome to the site from Tennessee.

Was this your first time using Winchester white box?

WWB is pretty well known for being pretty dirty ammo.
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Old 05-09-2019, 03:02 PM   #3
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How old was the ammo?
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Old 05-09-2019, 03:49 PM   #4
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Have other brands of ammo given the same results? Hard to determine anything from only one sample.
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Old 05-09-2019, 03:56 PM   #5
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When the primer ignites the powder pressure expands the brass case which seals against the chamber. The seal typically isn't 100% and you'll see blow-by on part of the case. Light charges and different powder burn speeds can affect how well and quickly the case seals in the chamber. When I make light loads for my Colt 1911 I'll get heavy residue marks on the case. When I was loading powder puff loads with light springs the blow-by was so bad that it would blow out the rear between the frame/slide and you could feel the warm breeze on your face. You'll also get more residue inside the frame as you noticed. Changing your grips didn't affect anything.
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Old 05-09-2019, 04:48 PM   #6
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Dirty ammo guy. Nothing wrong with your pistol.
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Old 05-09-2019, 06:42 PM   #7
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WWB is known for being very dirty ammo, if your wearing a T-Shirt or short sleeve and shoot enough your arm will become coated with the crap.
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Old 05-10-2019, 03:32 AM   #8
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Welcome to the forum from NY. WWB is a very dirty round and changing your grips is not going to do a thing but put a smile on your face...
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Old 05-10-2019, 04:21 PM   #9
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Welcome to the forum from Northeast, Pa. I agree with the others regarding the ammo being the problem but I have used WWB on numerous occasions and none of the cases looked that bad.
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Old 05-10-2019, 05:50 PM   #10
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It may be the age of the ammo...not how long you've had it, but its date of manufacture. I've gotten some top shelf brand ammo recently in bulk quantities (1000 rounds) that had visibly tarnished cases, which makes me wonder...
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