I never even considered the Ruger's, don't know why....I really like the look of yours manbearpig! Do the rugers have detachable magazines? As I don't really want a top load or hinged floor plate, I find them a pain in the butt to load and unload all day, as with my style of hunting it's in and out of the vehicle drive from bush to bush to push. I guess the reason I lean towards the BLR as I have 3 buddies that have one and they all love them, I have also noticed on the EE forum, you never see them for sale and when one does come for sale it's gone right away.
Never really been a fan of the 760/7600's find you really have to ratchet that pump in order to cycle it properly.
Do like the idea of the micro-bolt guns, I do reload so they maybe my best choice......