Ratslayer at high skill, critperks, sneak and luck, combined with no Boone (equals no spotter perk) and dark nights/skies is a traveling winner for me especially on low strength characters. 5.56 is easy to find or create, have low weight, and is nicely used on a light machine gun when things turn ugly. I don't *need* to move fast or shoot accurately when things get that ugly
So, nobody else likes the Ratslayer?
Not a kick ass weapon, but damned versatile especially in the darker conditions (using mods).