The Russian Mosin Nagant Forum

Can anybody share knowledge about French M-2 HEADSTAMP '55 ? Would it be corrosive ?

If there is any question then it's corrosive. Clean as if it was corrosive and spare the grief later should you not, and then find out it was. I trust nothing surplus, treat all of it as corrosive.

Shouldn’t be corrosive. The French used a different formula for their primer compound. It’s non corrosive but has a shorter shelf life. That’s why so much French milsurp ammo has dead primers.