There based of the M600/660 and XP action. They are basically the same as a model 700 just around a 1/2" shorter in lenght. There pretty light, and make a nice compact handy hunting rifle.
If your interested I know where there is a reasonable M660 in .308 from an online retailer. It comes with an old German Hensoldt Wetzlar Duralyt 6X with heavy post and crosshair reticle scope. I'll send you a PM with the details.