Hello
i inherited a rifle Springfield m1a loaded it has sadlack steel mount, Burris xtreme rings, sadlak spring guide, sadlak gas piston, tubs spring kit, vortex viper pst 2.5-10 gen 1, a Fulton armory cheek riser, Harris bipod. I have a 6.5 Grendel an 18-inch Grendel hunter barrel m4e1 hunter with and Odin works bCG.   I was wondering if anyone had advice on which one I should try to get into long-range shooting with. For me that would be 500 yards the longest range within four hours.