BloodRayne II: Deliverance

It's a hundred years later, and the vampire Rayne has arrived in the town of Deliverance, Montana where a group of vampire cowboys have emerged. Led by Billy the Kid, hell bent on creating his own kingdom, he slaughters townspeople and rounds up children. He spares the life of Chicago Chronicle reporter Newton Pyles. Rayne aligns herself with Pat Garret, a member of the long-thought dead Brimstone society, a dishonest preacher, and a low life named Franson, to stop Billy the Kid and show the world how the West was really won. (official distributor synopsis)