Long story short, there is now a live 9mm round in the chamber of my .40 Sig. It wouldn't fire and the slide won't pull back more than about 1/4", so I can't eject the round or take the slide off.
Turns out the round wasn't live, but the casing had stretched out and deformed inside the chamber.
Because I don't stick my eyeball at the end of the boom tube when I'm not 100% sure? lolNot trying to be a d1ck, but how did you confuse these two?