12ga MAGNUM Stevens single with a LONG barrel. A gift from the wife (pawn shop find). Stupid me, I bought Magnum shells to shoot her the first time. Fired a few and thought I had broken my dang shoulder!!! Fired the rest from the hip just to be rid of the evil things. Low brass loads HURT in that thing, I *expletive deleted*it you not. I always kept some high brass shells with me for when someone ELSE wanted to shoot it `cause I'm evil that way.
I went shooting with a bunch of coworkers one day, we all had carloads of guns and ammo... One of the guys was shooting some stoutly loaded slugs through an 870, hands it to me, and says "here give this a try, I'm having a hard time zeroing it."
I sandbag it on a bench, pull the trigger "BLAM!!!!!" My face and shoulder were stinging....
Me "What in the...?"
Coworker "Uh, I should have warned you, I cut an inch off the stock so it fits me better."