The problem is that there are very few maps that let the Scout's range advantage actually matter, and even on those maps, there are a bunch of structures to break LoS and let players close the distance (relatively) safely and nullify a Scout's strength. You have to post up on some very specific lines to avoid that and you're asking to get sniped for your trouble if you do. It's Bungie's map design being hostile to Scouts. The gun itself is mostly fine.