Which mil-surp .223 is magnetic?

[daskraut]

I know that SS109 stuff is due to the "steel core" (duh), but what about
U.S. Military Lake City Arsenal. 62-grain (M855) FMJ bullet??.

[TonyM]

I know that SS109 stuff is due to the "steel core" (duh), but what about
U.S. Military Lake City Arsenal. 62-grain (M855) FMJ bullet??.

M855 uses technically the same SS109 projectile. So yes, M855 types are magnetic.