Try down south by Fort Carson. It's called Cheyenne Mountain Shooting Complex. Closer than Pawnee, and long range on weekends only. During the week the law enforcement, has the long range tied up. Hope this helps!
Pawnee sportsman center is good but I believe you have to have a membership. Kiowa has a range that I’m not too familiar with but Great guns in Nunn/Pierce is where I go if I’m staying within 300 yards since that’s the max. I believe they’re adding a longer range however.