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Posted: 10/2/2005 7:18:07 PM EDT
Hello, could someone please tell me how corrosive the Yugo 7.62x39 ammo from Aim Surplus is? This ammo comes in a sealed 1,120 rd can, on stripper clips. So what do you think? Have any of you had a chance to try this stuff out yet?
Link Posted: 10/2/2005 11:06:59 PM EDT
Corrosive is corrosive. Kinda like the term "sorta pregnant". Now the Yugo stuff is fine so long as you clean every range session with a good bore cleaner, paying attention to the gas system I.E. gas tube. Then a couple a days later cleaning again. Corrosive ammo will only get you in trouble if you fail to clean right away and not follow up a couple of days later. Chrome lined barrels are more forgiving but the gas sytem will take a hit if not cleaned. The Yugo rifles were not chromed lined and poor cleaning practices explain alot of the "dark" kits.

Link Posted: 10/3/2005 10:03:34 AM EDT
Link Posted: 10/5/2005 8:29:19 AM EDT
[Last Edit: 10/5/2005 8:30:01 AM EDT by JA545]
As stated by the other posters "how corrosive" is not a question it either is or it is not. But.........
as with all chemical reactions the speed at which they occur is dependant on the tempature and with corrosive ammo the humidity level of the air.
The primer compound has Pottasium Nitrate in it as a oxidizer. When the cartridge is fired the primer residue is blown all in the barrel and gas system. The residue combines with water in the air to form nitric acid. The acid speeds up the reaction of the iron in the steel combining with oxygen to form rust.
If you shoot your ammo when the temp is 50 degrees or less and the humidity is under 50%. You will not notice any rust forming for days and maybe even weeks if the temp/humidity is low enough. Especially if rifle is kept in a unheated garage/shed.  The chemical reaction forming the rust will be so slow you will think that the ammo is mildly corrosive.
But if you shoot the same ammo in the summer when it is 90 degrees and the humidity is 70%+ you will see rust on it before you leave the range. Then you will think that the ammo is highly corrosive.
So if you shoot any corrosive ammo you should clean the rifle as soon as possible to prevent any damage.
Link Posted: 10/13/2005 9:48:12 PM EDT
Thanks, JA545
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