Those being the fact that they have drop, meaning you need to struggle against gravity even on still targets, which is to say, you have to lead a target that isn't moving. And the reticule being an imprecise box. What gives, there? Why is it not a tidy dot? Or hell, I'd settle for two dots to show the hornets going. Something. They're good weapons, don't get me wrong. But I don't like the feeling of a weapon actively struggling to resist what it should be good at.