On hit effects and strafe/multi/guided

[Ruvanal]

I believe you only get one to-hit check regardless of how many arrows visually hit a target,

It should be doing the to-hit checks until there is a successful one that starts the NextHit-NextDelay effect. There is also a minimum arc spacing on the MS missiles that are fired. This in it self will limit the number of missiles that can be having hit chances on a single target.

Another point is that if your to-hit chance is low, then you will only get minimal benefit from Pierce as you need to have a successful hit for the missile to continue on. Therefore if you are trying to use this technique to offset a poor to-hit chance, most of the missles will get used up on only the first few targets. Depending on what the situation is this may not be a bad trade off, but it is sort of self balancing.