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March 10, 2019, 12:08 AM | #1 |
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Lines below neck on brass?
I bought the bulk 500 "once fired" 223 brass from Midway. As I was depriming and sizing, in the same stroke, there were 18 that did not want to size. Even with case lube liberally applied they jammed up and got stuck. I didn't have to use an tools to get them free of the sizing die. With out fail when I got them out I saw lines below the "shoulder." Those lines may have happened in the die, but I'm not sure. Take a look at the pic attached below and tell me what you think.
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March 10, 2019, 12:40 AM | #2 |
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Could possibly be brass fired in a fluted chamber. There are some manufacturers of fluted .223/5.56 chambers out there. Usually they size ok though and are considered safe to reload? The fluted chambers work best for steel cased ammo and can be hard on soft brass cases. That hard to resize, I'd just scrap them.
Last edited by rg1; March 10, 2019 at 12:52 AM. |
March 10, 2019, 01:32 AM | #3 |
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I agree those look like flute marks to me . If so they should be there before you size them . Can you feel them ?
See post #12 below https://www.survivalistboards.com/sh...d.php?t=348646 Or https://www.google.com/search?biw=11...30.J92qWL1oqro
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March 10, 2019, 03:12 AM | #4 |
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Those were fired in a fluted chamber. H&K is likely.
I had a H&K 91A3 in 308 and they looked just like that. They reloaded fine, but don't know if they will for you. |
March 10, 2019, 07:23 AM | #5 |
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I'd think brass fired in a fluted chamber would have been noticeable during handling-especially when placing in the shellholder for sizing.
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March 10, 2019, 10:12 AM | #6 |
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Flute's seem not to be a big problem though I never heard of fluted chamber's. But they should still re-size in a proper die. Maybe not lubed well enough? Fairly simple job to take case's to big and size them down to something else. 308 down to 243 is a breeze. You don't suppose they might be steel case's? Never tried loading them but who know's, certainly not me.
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March 10, 2019, 10:23 AM | #7 |
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I can not see the lines but I have seen lines caused by too much grease/lube. I use a towel on a dowel to get a fresh start.
F. Guffey I thought he said he was liberal with the lube. |
March 10, 2019, 11:26 AM | #8 |
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What lube, press and die are you using? Might be a case of not enough leverage. You said it was not difficult to get the cases out of the die after they stopped. Did they get far enough to knock the primer out? Try running one of them through the sizing die again?
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March 10, 2019, 11:49 AM | #9 |
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Are they Berdan primed, perhaps your decapping pin is stopping your sizing die because of this.
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March 10, 2019, 04:17 PM | #10 |
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Those brass were fired in a fluted chamber. If HK type, the action pulls the brass away before usual action types and the base can swell more. Measure the base on the unfluted brass and compare it to the base on the fluted to check. It would be unusual for the lines to hurt the brass, but personally wouldn't bother with brass from most fluted chambers.
And yes, have loaded batches of fired brass from hk-91. |
March 10, 2019, 08:11 PM | #11 |
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thanks to all
Thanks to all for the info an ideas.
Just FYI I'm using Lee press and dies. By "not hard to get out after they were stuck" I mean I didn't have to take the die out and use an extractor or anything like that. The did take a lot of extra pressure to get them pulled out of the die after being stuck. Thanks again. Life is good. Prof Young |
March 11, 2019, 09:57 PM | #12 |
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What are the headstamps? I know some NATO countries use chambers that are are fluted.
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March 12, 2019, 09:11 AM | #13 |
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Prof. Young,
Those are definitely chamber flute marks. The flutes are supposed to make extraction easier in rapid full-auto operation. They will pretty much dissappear after your first cycle of sizing and firing in your chamber. F. Guffey, The edges of the flute marks are easier to see in black and white:
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March 12, 2019, 10:34 AM | #14 |
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I would send those back to Midwayusa. It really is unacceptable to sell you “fluted chamber” brass. They ought to pay return shipping as it should be viewed by both parties as Midwayusa’s mistake. If I bought these from a low dollar brass sorter..... I expect some scrap.
Fluted chambers work the brass. That means it is stress hardened from stretching over the flutes. It will be harder to size to the correct size. After you get it sized to run in your gun, it will crack sooner. I cannot tell you what percentage sooner, I have no experience as I scrap this stuff because I cannot move the shoulders back to where I find it acceptable to load. Annealing might help, but that adds to your processing cost...,a lot. |
March 12, 2019, 01:59 PM | #15 |
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"...some NATO countries..." Only one is Germany by HK, as I recall. HK-91's and 93's and their military counterparts the G3 and HK33 had fluted chambers. Rumours of the cases coming out of any of 'em not be reloadable floated around for years.
The headstamps will tell you if the stuff is milsurp. The NATO circle will too.
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March 12, 2019, 02:50 PM | #16 |
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The Spanish-produced CETME rifle also uses a fluted chamber.
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March 12, 2019, 02:58 PM | #17 |
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Ive reloaded TONS of 9mm brass that came out of MP5’s. Those also have fluted chambers. No issues.
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March 12, 2019, 04:32 PM | #18 |
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...and these .223 flute marks seem pretty tame compared to some I've seen on .308.
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March 12, 2019, 05:30 PM | #19 |
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Looks just like the brass that I used to get out of my HK93. And FWIW, resizing it will never get rid of it.
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