There is a free public range in the Ocala National Forrest.
There is a 100 yard rifle/pistol range and a skeet/trap range.
From Salt Springs turn onto SR314 go down about 2 miles to CR88 (there will be a sign on the left hand side of the road that says Rifle Range) Turn left. Go down about 10 miles, the range will be on the left side of the road. If you hit Highway 40 you went to far, turn around and go back about 1/2 mile.
Mike