Digging through some old ammo cans in the cave and fond a can of loose 30'06, bought at least 30 years ago. Headstamp LC69, should be non corrosive ball I presume. Others were black painted tips headstamp DA then a symbol that looks like a C with a 1 in it, the C is to full and the cap of the 1 is too long though, looks more like an upside down scythe and the C like a O with about a 1/4 taken from the front.year on it is 51. Is this likely to be corrosive and armor piercing? Thanks for any info. going to do some searching elsewhere.