Ammo question: German .30 M1 carbine ammo?

[msmp5]

Just found one box of this stuff in the bottom of a drawer in my garage. Probably been sitting there for over 25 years. Anyone familiar with this ammo? Know approximately how old it is? Looks OK to me for shooting, but I figured I’d ask the experts here first!

 

[JT-AR-MG42]

I have shot a lot of Geco (the original like you have, before the inevitable out-sourcing) and
have always thought of it as top notch ammo.
80's is a good guess.

Should be fine in your carbine.

JT