I am thinking of replacing my 454 casull super redhawk with a BFR in 475 linebaugh. I would really like to have a bisley grip on the single action. I was told that the BFR uses the same grip frame as the super blackhawk, so in theory it could be switched. Does anyone...bfr shooter or the fine gentleman who has www.singleactions.com, or anyone else know. Thank you kindly. wk