I have used my M72 carbine for about 15 years as my back up or "truck" gun. It is 30-06 mounted with the correct scope bases with a 1.5 -5 VX III.
It is grabbed by my hunting buddies all the time when we are in camp. It is sub-moa easy and is a joy to point and shoot. Fast handling and effective, it has accounted for many deer and some moose and elk here in Alberta. Be it -40 or in rain that we get (not the BC fire hose rain), it has never lost its way, even with it's full stock.
The safety is a poor device, but I do not use safeties on any rifle so I am not concerned. The ability to clear a mag with a push of the little stud in the receiver is a very nice feature for getting in and out of the truck. No magazine to lose, and wonderful feeding.
Rob is correct in that while I love the old MS rilfes, their triggers are really not the best. Even tho the set trigger version makes it ok - the firing pin lock up time is a little too long. This "cheaper" version of 1972 comes with a redesigned bolt system that has a crisp trigger and relatively fast pin lock time.
I have a couple now of these and love them dearly.