OK thanks. That leaves me with AB bomb type experimentations

.
I've just read on UBI forum that AB500 has different load than AB250 & AB1000.
I.e. AB500 has anti-tank droplets while AB250 and AB1000 have droplets intended for soft targets... may explain why aiming with AB500 is somewhat harder (most likely there is fewer droplets loaded in AB500).

Not sure about it tho.
http://forums.ubi.com/showthread.php...=1#post8137603