Homer,
I have a a ruger 77 that I converted to the 450 Marlin, set it up with a peep in the rear, 22in barrel and it is a blast to shoot. I use 458 American load data and it consistently shoots 1 - 1 1/4 inch groups all day long when I do my part. Just a very handy rifle that will work on anything in NA. Enjoy yours if you build it.

Dave