Twinke Toes, this is apparently the meat of that statute: "...any person who knowingly discharges a firearm in any public place or on the right-of-way of any paved public road, highway, or street or whosoever knowingly discharges any firearm over the right-of-way of any paved public road, highway, or street or over any occupied premises is guilty of a misdemeanor of the first degree, punishable as provided..."
The problem is, even though they were shooting towards the right-of-way, I don't know of any way I can establish they were shooting over the right of way. And, it looks as if there is no State statute on distance from an occupied dwelling, only that they must be shooting over it (or towards it, I guess).
I have called the Chief of Detectives for the County Sheriff's department, another law-enforcement friend of mine and the Godfather of my 3 year old Granddaughter, but he is out of town at a conference. I can wait until he returns; this is not something that is happening every day (once the day after Thanksgiving and again this past Saturday).
I.m trying to keep this low key because these people will likely be my next door neighbors for a long time, and I don't want to start the relationship in a confrontational way.
I forgot to mention in the original post that I have a 55 gallon drum of diesel fuel mounted on a 5' high platform (for gravity refueling) almost directly in line from where they were shooting.
I did see the white, 5 gallon bucket they were using to support the bottles, about 10' in on their side of the fence, with holes in it.