Wow, Clark, that's wild!
I've done something "similar," a giant round pillar cut like a logging stump with a "chairback" to support the bottom/rear of the recoil lug and bottom of the action.. I suppose for a 35 375 and up build, that thing of yours works great. I love the big ring around the final pillar. Now, THAT's bearing surface!

But for me, that's total overkill, but pretty darn slick thinking. Are you going to strip the blue tape and then skim-bed?


Up hills slow,
Down hills fast
Tonnage first and
Safety last.