I would like to use the Magnum Research Custom Design tool for the BFR. I would pick the short frame 475 Linebaugh/480 Ruger with a 6 inch banded barrel and ejector tube butted up to the back of the barrel band. Add a BFR Bisley grip frame and black micarta grips. And do an 11 degree forcing cone alteration on the barrel. And custom Precision Center trigger and action job.