Frontier Sportsman's Club just south of Colorado Springs has the land and has the firing berm built, but it looks like it is going to be a few more years before the 1k range gets finished. They do have ranges up to 300yds (with dozens of shooting lanes), 100+ pistol lanes, and a 50yd x 50yd and a 50yd by 100yd "informal shooting area" with high berms on 3 sides for whatever you wish to do - great for training.

Here is their website: http://frontiersportsman.org/home/