There is an exception for .30-06 M2 AP. But I don’t know of anyone manufacturing it. The question is can it still be considered M2 AP if it is not manufactured for the military?
I think there are people that pull the M2AP bullets and sell them. To the best of my knowledge, you can reload them into 30-06, but not .308 Win. I would think the accuracy is poor, so why bother? Don’t know the current ins and outs, but I don’t need to....