I have a Winchester 70 in 470 Capstick. I am very pleased with the quality of the work done. Mine is the Custom African Express from the custom shop. It has the Oberndorf floorplate for an extra round in the magazine (4 + 1). Winchester made the gun to my measurements-- fits perfect!
I notice that this chambering is only available in the Custom Safari Express now-- mine was ordered in 1999.

For those that are not aquainted with the Capstick. It fires a 500 grain Woodleigh .475 Bullet at 2450 fps. I get 2480 fps from a 500 grain Barnes XLC. Best of all, I get 2220fps from a Barnes 600 grain round nose. I have also loaded up some super varmiters---- 400 grain .475 handgun bullets at 2840 fps.