The best "social" purpose rifle(S)for a civilian (to include LEA): A 1950's vintage Winchester Model 70 Featherweight in 30/06 or 308 (depending on who's supplying the ammunition) with a Lyman 48 or 57 receiver sight, a 1.75-6X Leupold Vari-X III in older Kimber mounts, and a replacement steel trigger guard and floorplate. With minimum work on the trigger, good bedding, and minor truing of the action. Synthetic stock if massive climate shifts from wet to dry are common.
If I'm travelling around in a vehicle, I'd add to it, one of the delightful little Winchester or Marlin 44 Mag carbines (pre-the-damnable-pushbutton-safety) in 16 inch or 20 inch barrel (I have variations of both with an accuracy edge to the shorter barrel) with a variant of the old Redfield Sourdough foresight and an old Lyman 66 receiver sight, swivels, and a little work on the trigger.
Both are handy little pieces that are extremely reliable, attract minimal attention, serve a variety of purposes well, are extremely accurate within their respective range limitations, and unlike civilian clones of military weapons, seem to work all the time in all conditions....