Crossarm; sandbag front rest at 500 yards with 7mm Mashburn Super. 162 Amax IIRC.. Rifle weighs a shade under 8 pounds.
270 M70 FW; 300 yards prone, fore end supported in left hand and no rear rest.Seems like I need more support beyond 400 so am likely to use crossarm with rear rest. Bipods are an open question since I use them very little until very recently.