>>532444617
Are hellcannons that good against cavalry? Them being single shot and not having all that much explosive doesn't seem like a good fit for it, even with two of them they've reached my lines faster than I was done with them while extra infernal guard seem like a much better fit for the role if they're gonna be the clean up crew anyways for the 40 odd models that are still here despite the bombings.
If you mean single entity monsters or lords on fast movers I just tested them in a custom battle,19 of them (rank 0)against an empire lord on a pegasus, a relatively fast and small unit I'm sure you'll agree, around 17 got to fire, of those there were with missiles 5 and 7, around 10 hits and the rest seemed to be on their way to impact him but he died before that. Of course that's too many missiles but the point was illustrating their hit rate was alright.