I use them every now and then, but I use Snipers like Black Hammer and Ice Breaker and Fusion Rifles like Vex Mythoclast*, Murmur, Light of the Abyss, Peruns Run alot more then I use shotguns. That being said, I can see why Bungie would buff them for PVE, where as in PVP, shotguns gain more mileage because of how close quarters engagements can be become. *I said vex because it is a Fusion rifle and likely had an influence on the stats of the guns used in PVE.