600-122yd shooting info

[SDW]

I don't understand the "600-122yd" nomenclature, but anyway. Extrapolating from the data produced by my ballistic calculator (for my 20" rifle and load), a 123 gr ELD bullet strikes a 1000yd target with about the force of a 9mm Parabellum as it leaves the muzzle of a typical handgun. So as LR1955 says, conditions will need to be ideal, and spotter must have a keen eye have good glass, to see the splash.