Ok, so here is a box of .243 Remington cor-locs I opened up last week. Box is about 5 yrs old.

Long story short, my old man came out to see his new granddaughter and brought my Ruger M77 mark II out for me and any ammo he had stocked up. Got this rifle when I was 11. First deer rifle......sorry I'm trailing off.

So found this shell right away.......