Those mild steel jackets are softer than copper according to some hardness tests I read somewhere.
In any case, I have a test rifle I made up and I'm on my 4th case of corrosive surplus and the barrel is still as shiny and pristine as the day I chambered it. Still shooting 2 MOA or under with cheap surplus.
As for accuracy check out the thread by Ganderite in the stickies.
Really? That's good to know, now I can buy with impunity hahaha.





















































