Yeah, I tried 1887s to see if they're as easy as they look. They are. Turn around a corner, see someone, press mouse1 + mouse 2, they're dead. No aiming, no distance restrictions, only 1 shot.
Pisses me off.
The best shotgun in the game is the M1014. It's pretty similar on the damage ratio, the range probably isn't as insane as the M.1887's, but it has a faster fire rate, so it dominates just as much. I'd suggest you use it instead, as it has attachments other than FMJ and Akimbo. I wish the Winchester 1200 was in MP.
I've started sniping again, but with the .50 Cal this time. The gun has horrible hit detection. I can shoot at a wall where nobody is around and the chances are I'd hit somebody.