One of my church members came over just as happy as could be. He'd just bought a nice M-1 that looks like a very nice arsenal rebuild... SA 2.6 receiver w/ good looking 52 or 53 barrel. Nice rebuild stock, tight w/ fiberglass added to improve lockup which was wonderful. He got about half a can of LC M-2 AP dated 54. He wants to shoot it though his rifle but is not sure if the ammo is corrosive. Any idea where to go for an answer? Sincerely. bruce.