Just an FYI - I found on the Dodge forums that a lot of people have had trouble running the BFG all terrain KO's on 3/4 ton Rams. It seems that they worsen issues with death wobble (somewhat common front end issue on Dodge's). I have no idea why this is, but I found enough negative accounts to keep these from being my next set of tires (which they likely would have been).
I'm currently running the Toyo Open Country M/T's in 295 70 r17 that came on the truck. I have no idea about overall mileage, unfortunately. I'd like to know to help me make a purchase decision next time. They are a more aggressive tread then I would have picked, but I really like them. They have a great load rating and good traction in all conditions so far. A bit of tire noise, but not that noticeable over the diesel noise
I'm still undecided about my next set - I'd like to get something semi-aggressive but as long wearing as possible. Everyone runs the Toyo's around here - one of the big regional tire shops carries them exclusively in this area. Pretty much nothing but good reviews out there on them. I've heard similar things about Nitto M/T's that look really similar with similar specs and are USA made.