Guybo54:
I have some old Hornady 30 cal, 180 RNs that I know were bought in the 60s. Also have some 180 Spire Points that I think I probably bought in the 80s. Joe is correct, the newer bullets have Interlock printed on the bottom of the box, the older bullets do not
Just a thought, if you send the lot number on the bottom of the box, they might be able to tell you the DOM.
