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PaulS Super Member
Joined: Feb 18, 2006 Posts: 4330 Location: South-Eastern Washington - the State
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Posted: Wed Sep 27, 2017 4:48 pm Post subject: 9mm brass with a shelf inside |
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While going through my cleaned range brass I found some 9mm brass that has a shelf about half way down the inside of the case. I found 8 pieces and they all shared the same head stamp; "FM 9mm"
I was curious so I weighed them and they are a lot heavier than any other brass I have. They have about 3 grains less capacity than a standard 9mm brass. I assume they can be reloaded with a lesser charge but not by me. I put them in the recycle bin. Has anyone else run into these things?
_________________ Paul
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Speer, Lyman, Hodgdon, Sierra, and Hornady = reliable loading data
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Pumpkinslinger Super Member
Joined: Sep 22, 2007 Posts: 5001 Location: NC foothills
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Posted: Wed Sep 27, 2017 6:09 pm Post subject: Re: 9mm brass with a shelf inside |
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_________________ Mike
"I ain't no better than anybody else, and there ain't nobody better than me!" Ma Kettle |
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RePete Super Member
Joined: Aug 15, 2005 Posts: 1034 Location: Gods Country
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Posted: Wed Sep 27, 2017 6:26 pm Post subject: Re: 9mm brass with a shelf inside |
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I've used it and had no problems.
_________________ Proud member of the WTFDTSG Club.
Stercus Accidit = Sh*t Happens in Latin.
Nice try = You Suck spelled different.
My parents spanked me as a child. As a result, I now suffer from a psychological condition known as RESPECT FOR OTHERS. |
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slimjim Super Member
Joined: May 16, 2009 Posts: 8314 Location: Fort Worth TX
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Posted: Fri Sep 29, 2017 4:48 am Post subject: Re: 9mm brass with a shelf inside |
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Thanks, PaulS. I will keep an eye out for this and keep them separate.
_________________ "To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt
"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein |
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Gil Martin Super Member
Joined: Jan 28, 2005 Posts: 1837 Location: Schnecksville, PA
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Posted: Sat Sep 30, 2017 5:46 am Post subject: Re: 9mm brass with a shelf inside |
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I have not yet encountered 9mm brass with a shelf inside. Any such brass that comes my way will end up in the recycle bin. All the best...
Gil
_________________ Gil |
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PaulS Super Member
Joined: Feb 18, 2006 Posts: 4330 Location: South-Eastern Washington - the State
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Posted: Sun Oct 01, 2017 11:54 am Post subject: Re: 9mm brass with a shelf inside |
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I normally work up loads specific to my guns. I am in the process of doing that for the 9mm. I don't want two loads with different cases so I will just junk them as I find them.
I have plenty of brass so I don't need them.
_________________ Paul
__________________
Speer, Lyman, Hodgdon, Sierra, and Hornady = reliable loading data
So and So's pages on the internet = NOT reliable loading data
Always check data against manuals
NEVER exceed maximum listed loads |
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RePete Super Member
Joined: Aug 15, 2005 Posts: 1034 Location: Gods Country
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Posted: Sun Oct 01, 2017 12:57 pm Post subject: Re: 9mm brass with a shelf inside |
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Paul:
I don't sort my brass, just load it and shoot it.
_________________ Proud member of the WTFDTSG Club.
Stercus Accidit = Sh*t Happens in Latin.
Nice try = You Suck spelled different.
My parents spanked me as a child. As a result, I now suffer from a psychological condition known as RESPECT FOR OTHERS. |
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Vince Site Admin
Joined: May 25, 2005 Posts: 15704 Location: Brisbane AUSTRALIA
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RePete Super Member
Joined: Aug 15, 2005 Posts: 1034 Location: Gods Country
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Posted: Mon Oct 02, 2017 3:17 pm Post subject: Re: 9mm brass with a shelf inside |
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It's more than likely there to prevent bullet setback during the violent loading.
_________________ Proud member of the WTFDTSG Club.
Stercus Accidit = Sh*t Happens in Latin.
Nice try = You Suck spelled different.
My parents spanked me as a child. As a result, I now suffer from a psychological condition known as RESPECT FOR OTHERS. |
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PaulS Super Member
Joined: Feb 18, 2006 Posts: 4330 Location: South-Eastern Washington - the State
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Posted: Tue Oct 03, 2017 4:48 pm Post subject: Re: 9mm brass with a shelf inside |
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One of the representatives said the step was caused by the way they make their brass but no one else has the problem.
If a reloader loads to even 90% of maximum loads with this case the available powder space, or lack of space, is likely to generate much higher pressures. A few individuals have stated that cases have separated at the shelf leaving the upper half of the case in the chamber. I can see this happening with near maximum loads in the reduced capacity cases. Reducing the capacity of a case that is widely used without some kind of warning seems a bit negligent but then I am a reloader who doesn't often buy factory ammo. It just gives me one more thing to watch out for.
If anyone wants this brass I will separate it from the recycle bin and keep it until I have enough to transfer to you.
_________________ Paul
__________________
Speer, Lyman, Hodgdon, Sierra, and Hornady = reliable loading data
So and So's pages on the internet = NOT reliable loading data
Always check data against manuals
NEVER exceed maximum listed loads |
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