Story I heard was that the local politicians(recently elected woman mayor) decided they didn't want the shoot any more. And conspired to shut it down.
Seems the approximately 2 million(big time guess arrived at over beer one night.) that got dumped into the local tourist economy(The Central Lake area is full of house keeping cottage resorts, fishing resorts and people's summer cottages. Whole place was booked solid for the first week of June. Plus all the money spent of food and drink.) right at the beginning of the summer, wasn't wanted.
There was also a story about some idiot with a house, way behind the MG ranges(that had a great big 100 plus foot hill as a back stop), claiming a bullet had come into the kitchen window. Later proven to be entirely impossible given the angles and the physics/ballistics. And the guy supposedly sued Dick Davis over it. Why he kept the Second Chance Body Armour factory in Central Lake I have no idea. Except he has 600 acres there.