Will be fine for a sporting rifle. If headstamp is any date earlier than 1952, treat as corrosive primed. In addition to US milsurp, there is some Greek milsurp out there that is pretty good stuff.
M2 is not always AP, some is ball. If it has a black painted tip (as sold by the CMP) that IS armor piercing- steel cored bullet inside of jacket metal. Bear in mind that what it will penetrate is based on how far away it is, and no, doe not make tanks go up in flames- will tear the hell out of a truck.
There are various types of M-2 Ammunition. Most is full metal jacket 150 grain which the M-1 Garand was designed to shoot. If I am not mistaken the M-2 AP has a black tip on it. I am sure there are those here who would have more in depth knowledge of the round. I shoot my surplus M-2 in my M-1 Garands. They will shoot in your 30-06 although I may be wrong in my thinking, but I prefer not to shoot M-2 FMJ in my precision hunting rifles due to the thought of possible increased barrel wear? Shoot only copper jacketed bullets in them. So there again, I am am sure someone here can add to correcting my idea if I am just being paranoid!
After posting I noticed C-3 had also responded maybe he can expound on my thoughts and question!