Don't know how they were advertised, but some of the Korean ammo is corrosive. There's a thread out there on which headstamps are and aren't.
I ran into this after buying two cans of it. Not a problem in a bolt gun, but a pain in the Garand.
This is corrosive. The way I read a while back was the two head stamps were PS and KA. Easy way to remember is PS = Pretty Safe(non-corrosive) and KA = (K)orrosive ammo (corrosive).
I'm just using this for my bolt guns anyhow, I have a mess of HXP for the Garands.
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