BF weapons - minimum range and arc of fire?

[rerathbun]

My personal house rule (playing solo) is that artillery that self-spots does not cause friendly fire in adjacent hexes. My thought is that they may put a round or two on friendlies, but will spot and make the corrections before causing significant damage.

I still use the normal rules (9.51) for self-spotting artillery bombarding friendlies in the same hex as their target.