Indeed in my case I opted for a snap shot form a line of 4 groups against a grenzer unit of 6+officer.
I figured even at long range they should take enough of a kicking to drive them off or slow them down.
I failed to make an impression and then my line blasted away out of control for several shots after that as the grenzers simply moved out of arc and I couldn't regain control to wheel!
I should have presented and driven them off that way, or even better closed with them.