I would call them. If you haven't been to their range there's some paperwork you will need to fill out that you can print and have ready before coming their that will save you time. When they open on weekends my advice is to be at their range 20 to thirty minutes early because they do get busy checking people in.
Everything up to, but not including, 50 BMG is permitted. On Saturday and Sunday, rifle cartridges in pistol configurations are not permitted. So if you have any rifle cartridge like 5.56, 308, etc., that would have to have a 16" barrel to shoot on Saturday or Sunday. You are permitted to use any pistol that shoots a rifle cartridge Monday-Friday though.
Thanks! Your answer is awaiting moderation.