Our work guns are zeroed at 50 yards because ballistically the zero is same at 200 yards. We zero at 50 and and have virtually the same point of aim/point of impact at 200 yards. Albeit any engagement we are likely to be involved in would be under 25 yards 98% of the time, zeroing at 50 covers us for long shots if need be. For anything under 50, or under 25 for that matter, we take into account "hold-over" when engaging and compensate that way. It is a good system and I recommend it.