Help me out, guys. I just bought a Springfield m1a. In the users manuel, it warns against the use of reloads and typical store bought stuff. It goes on to claim that this rifle should only be fed military type (nato) ammo. The mil. ammo, they claim, has a very HARD primer that stops "slam fires." The use of non-mil. ammo is not recommended as the softer primers can lead to a rifle busting, injurous "slam fire." Should i be concerned with this warning? Correct me if i am wrong, this rifle will fire 7.62-51 and .308? Any help on this matter would be greatly appreciated.