shotshells

My buddy just gave me a box of old shotshells. I was hesitant at first as they were 15-20 years old! Everything was ok as the Benelli shot 'em out like a pro'! :) My thinking now is, if 15-20 year ammo is ok to shoot, what about 30-50 year old ammo or even 100 YEAR ammo? Has anyone done...

Shotguns for SHTF, have you really thought about it? Like the title says, have you really thought about it? What I mean by that is simple, ammo weight. There is no doubt the shotgun is a massive close range defense choice but there is the question of how much ammo can YOU carry on your person...