We need to know how is this shit calculated exactly.
I guess the "old" IYF was :
50% chance to miss your shot (burst doesn't matter) when 1 hex
The actual seems to be about chance per bullet ?
What I suggest :
-50% chance to miss with single shot when you're 1hex
-75 or 80% chance to miss per bullet when bursting 1 hex
-Remove the effect from 2 hexes
What do you think ?