LOLZ WTD XD. You. Are. Amazing. Scour the forums just to find out how many ppl want the shotgun (I'm assuming you're talking bout the peacekeeper) to be nerfed/removed. You actually want to make it (more) OP XD. I'm right with you man, they should totally buff that thing even more. Make me more of a beast than I already am with it XD.
But as an experienced Peacekeeper (see what I did there *eyebrow thing*) I can tell you that from close range you don't need to shoot at the head, cause if they even move a lil, it's not a 1hit kill if your shot isn't lined up properly. It will, however, be the case if you shoot at the chest. If you or the target is not moving at least. It's definitely not rare to get the 100dmg, I usually get it close range, depending on factors tho. I've gotten 7's too. Sometimes I get why I got it and sometimes I don't, but I've encountered really low hitmarks from shotguns in alot of games. At the end of the day you just gotta deal with it.
And to be serious for a sec, no they definitely don't need to buff the shotgun. I just want them to fix the inconsistencies of the weapon... hitting a guy square in the chest from 5m nets me 48dmg, as he runs away and he's further and I'm at same position I suddenly hit the guy 64dmg... that's just weird.