I have used WWII ammo for years with no failures. Most of it was 30-06. Some was 45acp still loaded in magazines. All of it worked fine. And the 45 magazine springs showed no sign of weakening! The only ammo that has had failures is military 38 spcl from the Vietnam War era. Several misfires. One squib load while shooting in country during the war (not a nice thing) Had to get a new revolver for that. No injuries.
However I use fresh ammunition in my carry guns.
However I use fresh ammunition in my carry guns.