I need some help solving a mystery. I recently got 4 spam cans of what was supposed to be 7.62x39. Well two are for sure 7.62x54r and one is for sure 5.45x39. The fourth is otherwise unmarked. So the 5.45x39 1080 rounds weighs more than the 7.62x54r 440 rounds and comes in at approximately 26.8#s. The mystery one weighs 29.6#s. I am trying everything I can to solve this without breaking the seal. My best guess at this point is that it's 7.62x25 1224 rounds. Any help or insight would be greatly appreciated.
Thank you
Thank you
