The Firing Line Forums

Go Back   The Firing Line Forums > The Skunkworks > Handloading, Reloading, and Bullet Casting

Reply
 
Thread Tools
Old July 24, 2010, 03:53 PM   #1
alloy
Senior Member
 
Join Date: September 11, 2008
Posts: 1,931
.308 brass deformed

Anyone reloaded brass that came out of a similar chamber?
Any ideas what that chamber was part of?
Or is it a blank?

__________________
Quote:
The uncomfortable question common to all who have had revolutionary changes imposed on them: are we now to accept what was done to us just because it was done?
Angelo Codevilla
alloy is offline  
Old July 24, 2010, 03:54 PM   #2
DiscoRacing
Senior Member
 
Join Date: December 19, 2008
Location: milton, wv
Posts: 3,640
HMmmm .. new one on me... very interesting.. Nothing i have seen before.
__________________
Desert Eagle Alliance Group Launcher Extraordinaire ______
----Get Busy Live'n.....Or....Get Busy Die'n......Red
-------They call me Dr. Bob,,,, I have a PhD in S&W
DiscoRacing is offline  
Old July 24, 2010, 03:56 PM   #3
alloy
Senior Member
 
Join Date: September 11, 2008
Posts: 1,931
It's a Lake City, '08 with the nato marking.
__________________
Quote:
The uncomfortable question common to all who have had revolutionary changes imposed on them: are we now to accept what was done to us just because it was done?
Angelo Codevilla
alloy is offline  
Old July 24, 2010, 04:05 PM   #4
TXGunNut
Senior Member
 
Join Date: January 16, 2010
Location: If you have to ask...
Posts: 2,851
My guess it was fired in an HK91 or similar rifle. Will reload just fine.
__________________
Life Member NRA, TSRA
Smokeless powder is a passing fad! -Steve Garbe
I hate rude behavior in a man. I won't tolerate it. -Woodrow F. Call Lonesome Dove
My favorite recipes start out with a handful of used wheelweights.
TXGunNut is offline  
Old July 24, 2010, 04:10 PM   #5
alloy
Senior Member
 
Join Date: September 11, 2008
Posts: 1,931
Just googled that rifle, mentions a fluted chamber.
Does sound about right.
__________________
Quote:
The uncomfortable question common to all who have had revolutionary changes imposed on them: are we now to accept what was done to us just because it was done?
Angelo Codevilla
alloy is offline  
Old July 24, 2010, 05:58 PM   #6
William T. Watts
Senior Member
 
Join Date: January 20, 2010
Location: Central Arkansas
Posts: 758
TXGunNut is correct, fluting is supposed to aid extraction for this type weapon. William
William T. Watts is offline  
Old July 24, 2010, 07:05 PM   #7
TXGunNut
Senior Member
 
Join Date: January 16, 2010
Location: If you have to ask...
Posts: 2,851
HK94 does the same thing, not sure about the HK93.
__________________
Life Member NRA, TSRA
Smokeless powder is a passing fad! -Steve Garbe
I hate rude behavior in a man. I won't tolerate it. -Woodrow F. Call Lonesome Dove
My favorite recipes start out with a handful of used wheelweights.
TXGunNut is offline  
Old July 24, 2010, 09:45 PM   #8
FrankenMauser
Senior Member
 
Join Date: August 25, 2008
Location: 1B ID
Posts: 6,706
Fired in a fluted chamber.

-Most likely an HK auto.
__________________
"Such is the strange way that man works -- first he virtually destroys a species and then does everything in his power to restore it."
FrankenMauser is offline  
Old July 25, 2010, 12:38 AM   #9
ISC
Junior member
 
Join Date: August 5, 2007
Location: Florida
Posts: 1,982
Yeah, CETMEs and HK 91s and their clones use the fluted chamber to allow extraction. Those rifles use a delayed blowback operating system that was originally designed for the 7.92x33 (8 kurz) round in the closing days of WWII. When it was scaled up to 7.62 NATO the German engineers (then working for Spain) had to use the fluted chamber to allow the brass to "float" out of the chamber. The flutes helped to reduce the pressure exerted by the case on the chamber walls by letting some of the gas flow between the case and the chamber wall, thus easing extraction.

It works, but makes for a filthy operating mechanism. Fortunately, those guns seem to operate fine when filthy, unlike the M16 which can get a little finicky when the combustion gases that are dumped in its direct gas impingement operating system are not cleaned after extended firing.

These guns also seem to be prone to sheared off rims and case heads when softer civilian .308 brass is used.
ISC is offline  
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 04:39 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2014 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Contact Us
Page generated in 0.07172 seconds with 9 queries