I was at the range today and someone had left two boxes of Aguila 7.62 brass but they were in two 40 S&W boxes. They look brand new but of course had been fired but I'm wondering what 7.62 they are? All it says on the head is Aguila 7.62 13. They measure about 2.010" x .464". I don't have anything to shoot these with but at least I might have some trading brass with my buddies. There's only 74 of them.