The range is in Burton. Make a left from 69E, its about a mile down on the right before the tracks. Its called Advanced Ranges.
The pit is DNR, its kindof a daylight thing, though there are no gates or range officers, respect the neighbors by not firing late at night. It's year round.
Please people, this area is rare, and all it takes to be gone is a signature and a sign. Leave the place better than you found it. If you shoot stuff, pick it back up when you are done. The last time I was there, someone left a large console TV on the firing line, all shot up, and thats the kind of thing that can ruin it for everyone else.