You know, I've used the Slug altfire so much I was wondering if it needed to be nerfed. I've even found myself using it point blank, since it's so much more reliable than the primary fire...
Viewing post in Shotgun-O-Rama: Buckshot Fantasy comments
If it was my decision, I'd suggest the slugshot take longer between shots. Like, maybe the pump takes longer, or it has a cooldown or something? That would make the slugshot much worse if an enemy is up close, but it would still work against distant enemies, especially if you can quickly get behind cover while it recharges.
(Also I like how it one-shots every hitscanner, so I wouldn't change that)
Still, it's up to you. I'm not the one programming this.
EDIT: OH WAIT YOU UPDATED IT AND I DIDN'T EVEN NOTICE.