A firearms charge might vary. With my situation, the guy discharged a firearm in the middle of the street in the middle of a crowd. In fact, the firearms charge was the bigger of the 2 charges (that & animal cruelty).
However, discharging a firearm on property might vary. You just need to check the local laws.
However, if you had a good attorney, he/she would have already found this all out for you. If you don't have one, I strongly urge you get one.