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7.62x51 case discoloration #7450313 01/04/22 12:54 AM 01/04/22 12:54 AM
Joined: Feb 2011 Posts: 811 Interior Alaska 3 30/06 OP trapper
30/06 OP trapper 3 Joined: Feb 2011 Posts: 811 Interior Alaska	I've purchased 7.62x51 ammo lately that have discolored brass in the neck. Perhaps it was annealed? Is this a sign that the brass case is a reload, or inferior quality? The ammo I've noticed with this was manufactured in Russia, Mexico, and Serbia, all 147/149gr. FMJ. I haven't noticed this discoloration in any .308 ammo I've purchased, or any USA-manufactured 7.62x51. Actually, never seen it before in any factory ammo. Thanks

Re: 7.62x51 case discoloration [Re: 30/06] #7450317 01/04/22 01:02 AM 01/04/22 01:02 AM
Joined: Jan 2008 Posts: 9,221 Alaska and Washington State W waggler trapper
waggler trapper W Joined: Jan 2008 Posts: 9,221 Alaska and Washington State	Annealed after case forming. No need to pretty-up military ammo. "My life is better than your vacation"

Re: 7.62x51 case discoloration [Re: 30/06] #7450329 01/04/22 03:11 AM 01/04/22 03:11 AM
Joined: Sep 2013 Posts: 10,404 Northeast Oklahoma M Mike in A-town trapper
Mike in A-town trapper M Joined: Sep 2013 Posts: 10,404 Northeast Oklahoma	All ammo is annealed, a few times actually, throughout the forming process when the case is made. Most manufacturers will polish the cases before loading to diminish the discoloration... Sometimes if you look close you can still see the line. I don't know about other nations, but any ammo produced for our military is required to NOT be polished so that it is easily verified that the necks were annealed. Mike One man with a gun may control 100 others who have none. Vladimir Lenin

Re: 7.62x51 case discoloration [Re: 30/06] #7450330 01/04/22 03:33 AM 01/04/22 03:33 AM
Joined: Jul 2013 Posts: 11,894 Amite county Mississippi Wolfdog91 trapper
Wolfdog91 trapper Joined: Jul 2013 Posts: 11,894 Amite county Mississippi	Probably just anneling that being said from Russia and the like it could be bimetal casings

Re: 7.62x51 case discoloration [Re: 30/06] #7450573 01/04/22 12:44 PM 01/04/22 12:44 PM
Joined: Feb 2011 Posts: 811 Interior Alaska 3 30/06 OP trapper
30/06 OP trapper 3 Joined: Feb 2011 Posts: 811 Interior Alaska	Okay thanks. It's not like we have a big selection.

Re: 7.62x51 case discoloration [Re: 30/06] #7450595 01/04/22 01:26 PM 01/04/22 01:26 PM
Joined: Dec 2015 Posts: 6,341 se South Dakota NonPCfed trapper
NonPCfed trapper Joined: Dec 2015 Posts: 6,341 se South Dakota	I've bought a few orders of IMI 5.56 through Midway and they have that discoloration. Shoots fine... "And God said, Let us make man in our image �and let them have dominion �and all the creatures that move along the ground". Genesis 1:26

Re: 7.62x51 case discoloration [Re: Mike in A-town] #7451084 01/04/22 10:49 PM 01/04/22 10:49 PM
Joined: Dec 2020 Posts: 1,717 Wisconsin Scott__aR trapper
Scott__aR trapper Joined: Dec 2020 Posts: 1,717 Wisconsin	Originally Posted by waggler Annealed after case forming. No need to pretty-up military ammo. Originally Posted by Mike in A-town All ammo is annealed, a few times actually, throughout the forming process when the case is made. Most manufacturers will polish the cases before loading to diminish the discoloration... Sometimes if you look close you can still see the line. I don't know about other nations, but any ammo produced for our military is required to NOT be polished so that it is easily verified that the necks were annealed. Mike X2 shoots just fine Megapredator ... top of the food chain! Member of WTA Member of MTPCA Member of NTA

Re: 7.62x51 case discoloration [Re: NonPCfed] #7451542 01/05/22 01:52 PM 01/05/22 01:52 PM
Joined: Jun 2007 Posts: 16,150 Tennessee Scuba1 "color blind Kraut"
Scuba1 "color blind Kraut" Joined: Jun 2007 Posts: 16,150 Tennessee	Originally Posted by NonPCfed I've bought a few orders of IMI 5.56 through Midway and they have that discoloration. Shoots fine... IMHO the IMI brass is the best stuff out there regarding consistency in thickness weight and size. Them Israelis know how to make that stuff. Let's go Brandon "Shall not comply" with morons who don't understand "shall not infringe."

Re: 7.62x51 case discoloration [Re: Mike in A-town] #7451564 01/05/22 02:27 PM 01/05/22 02:27 PM
Joined: Sep 2014 Posts: 4,738 carolina, Alabama The Possum Man trapper
The Possum Man trapper Joined: Sep 2014 Posts: 4,738 carolina, Alabama	Originally Posted by Mike in A-town All ammo is annealed, a few times actually, throughout the forming process when the case is made. Most manufacturers will polish the cases before loading to diminish the discoloration... Sometimes if you look close you can still see the line. I don't know about other nations, but any ammo produced for our military is required to NOT be polished so that it is easily verified that the necks were annealed. Mike x2 once you shoot it and tumble it the discoloration goes away. "If you're gonna be stupid you better be tough"

Re: 7.62x51 case discoloration [Re: 30/06] #7451687 01/05/22 05:56 PM 01/05/22 05:56 PM
Joined: Mar 2018 Posts: 2,227 Missouri H HayDay trapper
HayDay trapper H Joined: Mar 2018 Posts: 2,227 Missouri	Back in the summer, Midway was selling this Lake City pull down brass. At one point, got down to $225 per 500, with no haz mat and free shipping. Never fired cases, with CCI 34 mil spec primer. I inspect them and clean them up a bit and resize the necks, but otherwise shoots fine. Removing primer crimp is easy enough. Anyway, it all has those marks, and do remember reading somewhere it had to be done that way as proof the necks had been annealed. https://www.midwayusa.com/product/1023560172/

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