RevMike,
No, it would not be the only 6.5x57 in Montana. I have a friend who lives near Bozeman who has one, and I have a drilling with a 6.5x57R rifle barrel (and of course two 16-gauge shotgun barrels).
But Ingwe could be the first in Montana to own a 6.5x57 with a leopard-print McMillan stock.