Hey,
I went out last weekend. The Sibbald Flats range is called the Homestead range. They are run by Alberta Provincial Rifle Association, Fee is (for the public range) free they have a shotgun rage and a rifle range. Hours I think is dusk till dawn, you haul out what you bring in is the moto (including shells). I think it is a fairly nice range however there are idiots who leave all their garbage and shells everywhere which gives the range a trashy and sketchy look. Over all I've meet great people out there whenever I go.