RETIRED SHOW STOCK - ** Minor scuff marks on finish as seen in pic**
Will this stock bolt up to a Gunwerks GRB action with a Bartlein #13 varmint/Sendero contour and if not how much work would a gunsmith need to do to make it work?
Yes it will. The ejection port on the GRB is slightly longer than a Rem 700 like the stock is cut out for but this doesn't hurt function and is purely cosmetic. Depending on how long chamber/shank length area is on your bartlein barrel will determine if your barrel will fit and free float in the stock as it is now. Could require some minor sanding in the stocks barrel channel to completely free float it.
Good afternoon. Would this stock bolt up to a Remington 700 SPS stainless in a 300 Win Mag?
Yes it will, you'll need a M5 DBM like this one, https://www.grayboe.com/collections/bottom-metal/products/grayboe-dbm-remington-700 to run AICS magazines for your .300wm.