Generally speaking, you can shoot on BLM land, off the road a bit.
In the MOAB area, there is BLM land that is "protected." Near the National Parks. Other than that, if you have a safe backstop, you can pretty much shoot to your hearts content on *any* BLM land.
Obviously, if you are near a campground, or monument, or Native site, it would be a bad idea. But even then, a bit further away would be fine, according to what I know the BLM rules are.
We used to camp in College at a BLM "camp site" and walk a safe distance away from the other campers to a sand berm, set up our targets, and shoot safe.
Long range shooting? Perfect. The best place in the world for long-range shooting is open BLM land in Utah.
You live in Grand Junction? Or will? Perfect. Get a motorcyle that can handle dirt roads. Get some miles on beautiful Colorado and Utah dirt roads. Scout out a beautiful location away from people. Shoot to your hearts content. Have a ball.
The rules for shooting on BLM land: Don't shoot across roads. Get off the road to shoot. Use a safe backstop. Don't shoot near places people visit like Native sites, campgrounds, or natural monuments. That is pretty much it on public land in the West.