The life of the ammunition should last pretty long if kept out of the element, for example i shot some 12 gauge shells that have been out in my shed for almost 10 years and they still shot.
Ammunition shelf's were where the soldiers kept their ammunition and guns.
probably years. shoot it, if it fires it's good
Yes, I have seen it done. Ammo has a long shelf life but it will protect it in humid conditions.
An ammunition shelf is where all the ammo was kept in the trenches. Incase of a skirmish you just lend down and got some more.
All ammunition, if kept stored in a cool dry place, will be good for multiple decades.
Rifle, Shotgun, Handgun, Artillery
Shotgun shells
18
A shotshell.
Find someone who reloads shotgun shells. They will relieve you of your inventory.
It depends on the comparative charges of the ammunition. A rifle can have more recoil than a shotgun.
Yes, it is still sold.