Super Rare. The Ammo is next to impossible to find. It would cost you an astronomical amount of $ to both buy it, and shoot it. I read somewhere that there are less than 10 in Canada.
8 Ga INDUSTRIAL rounds are still made today. These are for shooting some sort of build-up off the inside of kilns in factories.
These industrial rounds have an extra belt around the base to prevent them being used in sporting guns.
If someone was to swage the belt off of old fired empties, it would be quite easy to reload them with shot.
http://www.shotgunworld.com/bbs/viewtopic.php?f=2&t=28280
.winchester.com/Products/industrial/industrial-products/Pages/industrial-products.aspx


















































