I recently bought some ammunition at a gun show for cheap ($5 for 3X20 rd boxes) but I have not been able to find any information about it.  I was told that it was Israeli military surplus, 55 gr , non-corrosive, and berden primed.
It came in plain brown cardboard 20 round boxes with a single divider down the middle and stamped:  "CAL. .223 (5.56 MM) BALL, 20 ROUNDS", MADE IN ISRAEL.  The headstamp is a 19 upside down, T to the left, Z to the right, and 82 on the bottom.
It looks dark with some light corrosion on some in places.  I haven't fired any yet  and am particularly concerned about it really being non-corrosive.
Can anyone identify this and tell me about performance?

Follow up:  one odd thing I noticed after the original post is that each box has an assortment of dates in the early 80's and the opposite number is different from round to round also.  It does not seem that it would be packed like this from the factory??

Sounds like somebody re-packed it with loose rounds.

hock.gifDammit!  The dealer at the gun show lied to me.  He told me that these were Berden primed and they're really boxer primed.  I scattered 15 cases hither and yon cuz I thought they weren't reloadable.
Anyway, I only got to fire a few but those went off without a hitch and the few I fired on target grouped well enough, but I was mostly testing function and it was getting dark and wasn't  trying very hard.
I'm gonna try to get some more.