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post #1 of 13 (permalink) Old 11-17-2012, 07:48 PM Thread Starter
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hole in cartridge

i was shooting my 358 today with some custom ammo from wisconsin cartridge and one of the emptys came out like this.



it can best be described as a vertical hole about 1/8" long right above the base. the ammo is new with new Jamison brass. its supposed to be regular velocity ammo and loaded with 200gr round nose. i don't know the powder type or weight.
anybody ever see this before?

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post #2 of 13 (permalink) Old 11-17-2012, 07:51 PM
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Re: hole in cartridge

Probably a manufacturing defect in the brass, let them know.

Usually its a horizontal split in that area from too much head spacing after a few firings.

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post #3 of 13 (permalink) Old 11-17-2012, 09:29 PM
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Re: hole in cartridge

Check your fired primers for evidence of being flattened beyond normal. How was the recoil when you fired the rounds? Was there any problem in extracting the spent cases? I have had many of the these over the years and typically was due to over worked brass.

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post #4 of 13 (permalink) Old 11-17-2012, 09:34 PM Thread Starter
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Re: hole in cartridge

recoil didn't seem any different. the primers look ok too. this is newly mfg'd ammo with new brass.

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post #5 of 13 (permalink) Old 11-17-2012, 09:36 PM
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Re: hole in cartridge

Did you check the chamber for a high spot? That vertical hole is really strange.




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post #6 of 13 (permalink) Old 11-17-2012, 09:38 PM
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Re: hole in cartridge

Well then I would suspect that the quality of the brass is not up to what it should be. Maybe there was a bad run of brass or this particular case had a flaw in it. Actually, I have never seen this happen to new brass, but, I suppose that it does from time to time. This blow out is not something you are experienceing on anythiing close to a regular basis, is it? If it is, then another culprit could be an irregularity in the chamber and that is bad news.

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post #7 of 13 (permalink) Old 11-18-2012, 12:25 AM
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Re: hole in cartridge

Its just a flaw from the extrusion process although most times you see it or happens in the shoulder or neck. Toss it in file 13.

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post #8 of 13 (permalink) Old 11-18-2012, 10:47 PM Thread Starter
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Re: hole in cartridge

i have only shot about 3 boxes of various ammo out of this gun and this is the first one i saw like this.

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post #9 of 13 (permalink) Old 11-18-2012, 11:54 PM
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Re: hole in cartridge

When Hornady came out with the leverevolution I had a case split like that on a .357 factory load. Hornady offered to replace the box with other rounds as they said they had some annealing problems with some cases.

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post #10 of 13 (permalink) Old 11-19-2012, 12:57 AM
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Re: hole in cartridge

I agree, brass not annealed correctly. I have had a green/yellow box of 30-06 with some of the primers in upside down. These were replaced free. I also have a 20 gauge Winchester round that the brass band never bonded to the base. I have had it for years, it came out of the box that way.

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