Firing thru artillery

Had an odd situation in a game yesterday.

15 pt Art B "skirmishing" in front of large unit pike blocks at with the -2 mod at long range made both the artillery and the pikes behind them untouchable to Art A. You can fire thru CL & S to hit the units behind at 1/2 dice, but not a loosely formed target like artillery?

A simple request for Imp 2 to allow firing thru artillery just like S & CL.

Yes an odd situation I agree. Not a bad idea to allow half dice here also....can't imagine this would come up very often?

Looking at Baroque as a guide Artillery can always be ignored as a target... I would just run with your idea stecal and use half dice for now