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Tz - 80

This is a discussion on Tz - 80 within the Ammunition forums, part of the M14 M1A Forum category; Almost sounds like an annealing step was missed or botched....


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Old November 29th, 2008, 04:50 PM   #16
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Almost sounds like an annealing step was missed or botched.

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Old November 29th, 2008, 05:07 PM   #17
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I had the same thing happen to me right after I bought my rifle. I posted it on this site about a year and a half ago. I can't find the case right now but I do remember it was TZ from the 80's. Milsurp stuff, not reloads. It actually etched the case of the next round in the mag with hot gas before everything blew out of the mag. I buried the rest of the ammo in a deep hole.

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Old November 29th, 2008, 05:28 PM   #18
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geeck! I bet it ain't as Hard as Cavim Brass!

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Old November 29th, 2008, 10:35 PM   #19
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I have tryed some cavim brass, any issues with that stuff.


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Old November 30th, 2008, 09:25 AM   #20
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This is a well know problem with the TZ80 ammo, not all of it was used, I have/had 3000 rounds of it. I bought it from AIM in sealed ammo cans 500 rounds per can. Thinking it was good ammo I sat on it for over 10 years before even firing any of it. Lesson learned always test surplus no matter how good it looks. So far I have pulled down about 1 K, it makes an excellent reload but I back the powder charge back a little. At todays prices the bullets and powder are worth what I paid for it but still a bummer.

BTW way mine was all lot number 8-80.

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Last edited by mack7.62; November 30th, 2008 at 10:42 AM.
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Old November 30th, 2008, 11:59 AM   #21
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No Rocky, none that I am aware of except that the Brass is hard to work with, it is hard to re size and Squeals and Flakes when you trim it!

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Old December 1st, 2008, 06:41 PM   #22
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Who knows how it was stored over the years or what chemicals it may have been exposed to that created the overpressure problem. I only buy loaded ammo from a known source or reload myself to ensure my and others safety. The links are - http://forums.gunboards.com/showthread.php?p=363686 and http://www.thehighroad.org/archive/i.../t-187965.html . There are mixed reviews regarding the brass and caliber.

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Old December 2nd, 2008, 06:49 PM   #23
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Quote:
Originally Posted by 24kshooter View Post
Who knows how it was stored over the years or what chemicals it may have been exposed to that created the overpressure problem. I only buy loaded ammo from a known source or reload myself to ensure my and others safety. The links are - http://forums.gunboards.com/showthread.php?p=363686 and http://www.thehighroad.org/archive/i.../t-187965.html . There are mixed reviews regarding the brass and caliber.
24k,
Is not an overpressure problem it is bad brass cases. I have pulled down over 1000 rounds of TZ 80 and have reloaded and shot approx. 500 rounds using the powder and bullets. I do back the charge back a little but not much, less than .5 grains. Also mine was not loose ammo but in cardboard boxes in ammo cans and don't confuse IMI with TZ, I have not heard of any problems with IMI brass. I do have a bucket of unfired primed cases if someone whats them ;-).




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Old November 8th, 2009, 05:51 PM   #24
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Post Tz - 80

guys
went to range with scout rifle. shooting some TZ 80 ammo. two rounds had 1/8 inch splits in side of case, but the third round split from the primer pocket up to about 1/2 inch. the floorplate blew off dumping the ammo on the table. Yes, i was wearing safety glasses, thank God, the right lense was impacted with powder/brass . I got this ammo in a trade deal from a member here. U guys heard of this happening before.
The box is marked: 20 Cartridges cal. 7.62mm
BALL
Lot: 14 - 80
Shoot 60 more rounds after this with no problem.

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Old November 8th, 2009, 06:33 PM   #25
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I have heard that Song now for a couple of Years or maybe more, I had the chance to buy 500 Rounds of Israeli Ammo for $ 90, loose with mixed Headstamps, some TZ, some IMI and some with Hebrew Characters, I passed on the Deal because of what I had heard Here on this Board!

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Old November 8th, 2009, 06:50 PM   #26
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Post Tz - 80

Hi Sante,
Bought 100 rounds this summer at a good price, First 20 rounds = 3 failure to fire and 2 reptured cases. Dumped the rest in the oil bin. Glad your not hurt!

Semper fi

PS: mailed your stuff on Friday.

Bill

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Old November 8th, 2009, 07:41 PM   #27
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Sadly yes, I have heard of problems with TZ 80 surplus. (I have 1K of it in OEM boxes and fifty cal can) To me, It is not worth the risk of a ka-boom in my rifle.
The issues I've heard of are exactly like the ones you experienced.
I'd take it apart, and salvage what you can. Cut your losses.

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Old November 8th, 2009, 08:12 PM   #28
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Quote:
Originally Posted by smahan2 View Post
guys
went to range with scout rifle. shooting some TZ 80 ammo. two rounds had 1/8 inch splits in side of case, but the third round split from the primer pocket up to about 1/2 inch. the floorplate blew off dumping the ammo on the table. Yes, i was wearing safety glasses, thank God, the right lense was impacted with powder/brass .
Yes smahan2,

This has come up more than once in the past. We are all happy to hear than you didn't get hurt with the Israeli surplus ammunition.

I have been testing older Israeli military surplus ammunition from 1970-1976 right now. I check all rounds for issues before I take anything to the rifle range to fire.

Israel, '74, [ ], Boxer, zero crimp with red primer sealant visible. month-year
Israel, '75, [ ], Boxer, zero crimp with red primer sealant visible.
Israel, '76, [ ], Boxer, zero crimp with red primer sealant visible.

As I have noted before Israeli/Hebrew symbols don't show up here....

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Old November 8th, 2009, 08:38 PM   #29
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Tz 80

Few yrs ago I had a sealed 500rd can of 20rd boxes of this TZ80 ,shot it all up with no issues

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Old November 8th, 2009, 08:41 PM   #30
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I just got shooting this headstamp brass for the second time, and loaded for the third firing. I wasn't aware of the problems with this brass, I just thought it was cool cause it was boxer primed for once. Scary.... I'm gonna pull the loads and chuck the brass. Good thing it is only 20 rounds. And I didn't have any malfunctions or case explosions.

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