Short barreled AR-15 EoTech sighted house guns, 36 yards.
16 and 18" barreled AR-10 house and bang around the farm guns are zeroed at their PBR.
For example, my 16" 308 REPR firing 155 gr Scenars at 2669 fps PBR zeros at 272 yards, I verify that zero, then loosen the cap on the 2.5-10x24 Nightforce, spin back to zero and retighten, I know I can hold center body to 300 yards and will be approx 4"s high at 100, piece of cake.
