A 'Western Horror' or a "Horror Western?'

Led to the Slaughter never felt like a Western to me.

But the sequel is shaping up to have many more the elements of a western -- cowboys, boomtowns, gold rushes, miners, Indians and Indian Wars, saloon girls, etc. etc.

But I want to keep the focus on Horror, not on Western.

I like the historical underpinnings, and I figure if I keep trying to be accurate, it won't come off as a Western.  (My model for this would be the great books by Don Berry about Oregon -- which are set in the west and in western times, but yet feels real and authentic.)

I think I can pull that off, but I do need to be cognizant of the possibility.