So I've been playing this for a bit but I'm wondering one thing. What guns does the 12 Gauge shotgun rounds go to? The Riot Shotgun? I've only found three shotguns (single, caravan, and lever-action) and from what I can tell I can't use the 12 gauge shells in them. Either that or I'm just as blind as all get out. Anybody else hauling around seemingly useless 12 gauge rounds only for them to not be usable yet?

sawed off is one