TexasCHLforum.com

I'm still shooting South African 55 grain ball that has a 1980 headstamp, never an issue, has sat in my garage in an ammo box for decades. Back in the 90's I was shooting Den 42 surplus ball in my Garands with no issues at all either, that would have made it 50 years old. Wish I had some left around to test it out, 70 years would be a real test. I can say I have had a problem with rimfire ammo similarly stored though, I guess the rimfire priming method is more prone to aging, not sure.