Setting the maximum clip size from plugin land isn't very feasible, we'd have to do something different.
My only suggestion is try to make it work like the Eyelander.
I mean, look at how much we changed the bazaar bargain. (gain head on miss, lose heads on hit)
That would be a single direct rocket, 500 per rocket would be more reasonable.
2500 damage for max clip size [8], probably, 2000 would work too