Dan, I see what you mean about awkward lines in places. Seems that back in the day we didn't quite know how to handle the top line of the grip and the transition to the point of the comb on the Mausers. Later on when I was at Trinidad, Ed Shulin was suggesting that the tang should be filed down to smooth and ease this curvature and that a less abrupt curve to the comb be used. Stock makers were more used to doing Springfields and M70 ' s I think, and might have been more used to working to the Whelen/ Springfield style. The modern American classic stock formula was still evolving into its current form. So I'd think that both our stocks exhibit this transitional uncertainty. Each serves as a history example.
Did your action have a manufacture date by any chance?