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Dawgdad Super Member
Joined: Feb 08, 2006 Posts: 1065 Location: On the Prairie
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Posted: Mon Apr 27, 2009 2:42 pm Post subject: Re: dpms 223 rifle |
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Someone shooting a full auto at the range where you pick up the brass? Usually bulges like that occur when the bolt is out of battery and the case is starting to eject before the bullet has left the barrel. A small base die could salvage them but now that you have new brass.... problem solved!
_________________ Alcohol, Tobacco and Firearms should be a convenience store, not a government agency... |
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Dimitri Super Member
Joined: Nov 25, 2005 Posts: 5944
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Posted: Mon Apr 27, 2009 4:00 pm Post subject: Re: dpms 223 rifle |
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gatornavy wrote: |
most of the problem upon further observation was at the bottom of the cases, looked like they were bulged a little. |
Semi-automatic rifles and fully automatic rifles are what do this to the brass. Once you size the brass with normal dies you don't get rid of it which can cause reliability issues. Because the extraction may start before the pressure lowers enough due to the bullet existing the barrel.
Hence why the small base dies were invented.
Dimitri
_________________ A thousand hills, but no birds in flight, ten thousand paths, with no people's tracks. A lonely boat, a straw-hatted old man, fishing alone in the cold river snow. |
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d_hoffman Super Member
Joined: Feb 13, 2007 Posts: 696 Location: Chillicothe, Ohio
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Posted: Tue Apr 28, 2009 11:06 am Post subject: Re: dpms 223 rifle |
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_________________ The best form of gun control...aim straight!!! |
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Pumpkinslinger Super Member
Joined: Sep 22, 2007 Posts: 5001 Location: NC foothills
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Posted: Tue Apr 28, 2009 1:51 pm Post subject: Re: dpms 223 rifle |
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Was the first batch of brass resized full length?
Also note that DPMS recommends that you NOT use certain brands of brass. (That one bit me too...)
_________________ Mike
"I ain't no better than anybody else, and there ain't nobody better than me!" Ma Kettle |
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chambered221 Super Member
Joined: Aug 17, 2007 Posts: 3455 Location: Lost for good !!!
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Posted: Tue Apr 28, 2009 5:00 pm Post subject: Re: dpms 223 rifle |
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To my understanding Dillon 223/5.56 dies will size the base !!!
I do not own a set so I can’t tell you positively if that’s true.
I’d check on it before buying another set of dies.
So what’s this about not using certain brass in a DPMS ??? Can someone explain the reason behind this ???
_________________ Ask as many people needed, sooner or later your question will be answered the way you want it answered !!!
A free people ought not only to be armed and disciplined, but they should have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them, which would include their own government.
~George Washington |
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Dimitri Super Member
Joined: Nov 25, 2005 Posts: 5944
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Posted: Tue Apr 28, 2009 5:11 pm Post subject: Re: dpms 223 rifle |
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Some brass is too thing, due to it being commercial brass. Other brass is made thicker. Since the DPMS rifles have a 5.56mm NATO chamber it can cause issues as the brass expands to fill the larger military chamber.
Then again does it really matter its in their manual:
Quote:: |
Please note that the use of re-loaded ammunition voids the factory warranty |
Dimitri
_________________ A thousand hills, but no birds in flight, ten thousand paths, with no people's tracks. A lonely boat, a straw-hatted old man, fishing alone in the cold river snow. |
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Vince Site Admin
Joined: May 25, 2005 Posts: 15704 Location: Brisbane AUSTRALIA
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Posted: Wed Apr 29, 2009 3:25 am Post subject: Re: dpms 223 rifle |
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OK Gator....I thought I'd let all of the techo stuff get out of the way before I started waffling mate.
The only thing I can add support to is, be mindful of ex military brass. I don't question the quality of most military brass, but once fired you have no idea what it went through before being sold off. I know that here in Australia, the military must return a minimum of 85% of the expended brass to the system. It is then returned to the supplier to be remade. In other words, they only ever intend for it to be used/fired once. Additionally, the dimensions of military brass are ever so slightly different, with the thickness of the brass being one of the main problems to take into account.
Yes mate...it was '95 from memory when we were castrated by the Govt. I won't go into it because I get very bitter about what was done, why, and how.
What branch of the service mate? We have guys on here from pretty much every branch...Army, Navy, Airforce, Marines, and Law Enforcement as well. Myself, I did 26 years in the Royal Australian Regiment...infantry.
Cheers, Vince
_________________ Cheers, Vince
Illegitimi non carborundum
(Never let the bastards grind you down)
Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God.
"Nulla Si Fa Senza Volonta."
(Without Commitment, Nothing Gets Done) |
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