It depends on the engine and options. When I went to look at the XD the dealer showed me that a fully loaded XD diesel as low as 1400lbs and the gas fully loaded around 2200lbs. These PU are not a true 2500 as my RAM 2500 gas was 2800lbs and the diesel option was 1900lbs for the models I looked at way back when 5.9 engines were avail.
I have a RDS 45 gal aux tank because the stock 26 won't get you anywhere!! Going to build a cross storage box on top of box rails for grill, camp chairs, level blocks, and jack. Box is going to be 12" x 24" x 6' also taking back seat out to build shelf's for tools, rain gear, boots, map boxes, and anything else we need. Camper only weights 1500 lbs. and I put stable loads on so the truck handles it so you hardly know its there. I've driven it in winds 25 gusting to 35 no problem at all.