Other than Silver Bullet on the NW side of town there's
Arvada Rifle and Pistol Club, but they are very restrictive on ammo and caliber. The only other ranges that are public are "The Shootist" off Sante Fe and Dartmouth, and
Family Shooting Center at Cherry Creek State Park, both of which are not a short drive for you.
Silver Bullet is probably the best bet for you. It can be hinkey at times with respect to gangbanger types, but generally that's the exception. The biggest issue is crowds: weekends suck, you'll probably wait at least 45 w/o a membership reservation (if you have a current membership, you can call in and reserve a lane for a specific time). The best times are weekdays early: noon, or late past 5:00PM. They are open until 7:00PM.
As far as bang for your buck, it's the best deal in town. An annual membership pays for the 13 sessions per year, and they don't expire. You get a punch card with 12 ticks which give you 12 sessions plus a free one when you purchase your membership. So if you have used 6 sessions during your year's membership, you keep your card and can use the punches/ticks until you have used all of them up.