Did a very quick tall-ish target at the range today. 100 yards, those are 3/4” dots, note the vertical was not plumb between targets, you are not seeing a left/right shift. 4.2 mils between bottom and top dot measured with the reticle. 1 shot at bottom dot, dial up 4.2 mils, aim at bottom dot fire 1 shot. Dial back to zero, one shot. Up 4.2, etc. groups are same size, tracking is consistent. This scope works as it should.