I built a 375 Whelen AI (40 degree shoulder) or a between the wars 98 Mauser action. The barrel came from ER Shaw. The reamer from 4D. I forget the maker of the laminated stock, but it was needing inletting and shaping, I added a Lyman aperture sight and a brass post up front. Here's a load with a j bullet. I'm pretty proud of this rifle. I didn't get to take it to Africa like I had hoped but I hope my kids don't sell it on my estate sale. I have a 35 Whelen too but on a 700 action. I'm thinking of having a 03-A3 rebored too.
375 Whelen AI M98, 235 grain SPEER, 61 grains H335, 1.29 MOA