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three screw blackhawk

  1. OM Blackhawk Ross variant

    Ruger Single Action
    Greetings all, I am looking for information on the "Ross Type 1" variant Blackhawk. I recently acquired an OM three screw that certainly has all the characteristics of the type 1 and falls within the serial # range of the Ross variants. I have read Bill Hamm's article on Gunblast and compared...