7.62 X 39 AK-47 ammo corrosive?

[Olly556]

If unsure whether or not your ammo. is corrosive it's best to treat it like it is...Buy yourself a can of Ballistol and follow the instructions on the can about mixing it 10:1 water/Ballistol for cleaning after firing corrosive ammo. Doing it this way you shouldn't have any issues.

 

[sandog]

About 20 years ago I had both a Romanian AKM and a Colt AR in 7.62 x 39.
Tens years ago I bought my first Mini-30 and have had a pair of those ever since.
I've not seen ANY corrosive imported ammo in that time, except for Yugo M67.
The M67 ammo utilized a mildly corrosive primer in order to extend shelf life. It has a real nice annealed brass case with well sealed primers.

I read all the comments about treating all 7.62 x 39 ammo as potentially corrosive.
Well, if you have been sitting on some ammo made in the 40's or 50's, yes, it could very well be corrosive and should be subjected to the test that has been mentioned above.
The only ammo you have to worry about these days as being corrosive is the M67 Yugo, and that is no reason to avoid it.
The M67 is above average in accuracy and velocity. I clocked this batch recently at 2520 fps from a 17 inch barrel.

 

[DWalt]

Plain water will work as well as anything to clean corrosive primer residue. I usually pour warm water down the barrel or anyplace else exposed to residue. WWII/Korea GI bore cleaner was just an oil-water emulsion, and it works well because of the water.

 

[Fishinfool]

I know some guys like Windex, but I have always used hot soapy water, just like I do with my BP guns. It has always worked well. Back when new in the cosmoline Chinese SKS's were like $85.00, I also picked up a case of corrosive Chinese ammo. It was accurate in that rifle, and reliable. Only took a few minutes to clean it. It shoots just as well today.

Larry