Because the Winchester boys' hunting roots come from their mother's family, not their father's.Probably the only reason to do it is so Samuel Colt could be in it. I personally think it'd be better to do an Old West Supernatural in the 1870s or so, too (but that's where my Old West Monster/Horror story is set--damn you, Kripke!).
Samuel Colt? Why are they snubbing the boys' direct ancestor, Oliver Winchester?They could set the show in California since the Winchester Mystery House is in San Jose. I'm sure Oliver Winchester invented all sorts of supernatural guns (which is why his widow freaked out about being "pursued by ghosts" and started building the Mystery House to fool them).
It's a bit odd that there's a real life story Kripke could make use of. His lawyers probably told him not to.
