Nah that's an M96 (or M38) Swedish Mauser. The front sight is wrong, and it has the Swedish Bayonet. Still loud as hell, and 6.5 Swede is still no joke in terms of accuracy and stopping power today.
The M28/30 was indeed his main rifle, but he had a Swede too. There's a picture of him after he retired where they're all in a rack behind him in his house.