Powder and Primers Shelf Life ?

[300BLK]

I have used primers that were 30+ years old. Powder can last indefinitely if stored properly. Ball powders will smell different than extruded. If older, extruded powder smells like ether, its fine. Last fall I loaded up some WW296 that had to be 30 years old, and it was fine. I still have some AA#5 and #7 that is that old, and just fine.

I have seen factory ammo split necks with age, but it must have been most of 100 years old.