We are using 44.5 gr Varget, Fed 210M primers, Fed match brass, Nosler 150 BT' s and A-Bonds in our bolt Venture rifle.  Accuracy and repeatability are way over my standards. 

Got a SCAR recently.  Having some known-to-work loads handy we took Mr. FN to the range and achieved the same results.  

Whatever you choose, congratulations on a great find.