Lived in a state that I was forced to use shotgun and slugs for deer hunting. I have since moved from that state for that reason. Accuracy is simply ok and range limitation stinks (alhough both are leaps and bounds better than even 10 years ago). I've had several several deer hang up beyond my comfort range with slugs. I couldn't take it anymore and had to move to a centerfire state. I have enough deer hang up on me during bow season!
Also L.E. fireams instructor and shoot my fair share of slugs yearly. An excellent up close and personal "brush" gun, they kill stuff real good. Ammo and guns get better and better every year. The biggest deterent is RECOIL. I was once told by and instructor that the 12 gauge slug has the same recoil than the 375 H&H. I think they're worse. Even the "reduced recoil" slugs thump ya. And the recoil makes practice dificult becuase you go back to bad habbits real quick if your not careful. Last year my dept got 40 new Moss 590's (all tricked out) welllll guess who had to function check and zero them in 2 days "So we can get em on the road!" Yea, I was a little sore for the next week or so.
If I was a back packer in bear country I'd load up a shorty 12 with slugs and carry on. Best of luck to all and good hunting.