Long Range 1000 to 2000 yards

Me and a few friends have entered into the NIghtforce Steel Challenge and we are wanting to go out a few days early and practice in some winds and shoot and check our guns and get data on targets at ranges from 1200 to 2200 yards. Are there any ranges in the wyoming area or surrounding states? the match is near Douglas, Wyoming. Ben I know you seem to be about 10 hours away from the competition but we are looking for something in the 3 to 4 hour range(no pun intended)