Well it was not common for folks to buy the pattern of rifle they were issued and use it as ahunting rifle back then.
also post WWI the cheapest option was to buy a Bannerman or DCM or Kirk Stokes Kragif you wanted a high powered hunting rifle. Surplus Krag ammunition was available from the DCM until around 1928.
That particular set up looks fairly close to a Kirk Stokes pattern sporting rifle from the 1920s. A lot of the 30 inch rifles had the last few inches rusted out but once you got back around 4 to 6 inches the center of the bore was ok. So they cut the barrel down to 26/24/22 inches, mounted a front sight band close to the M1905 pattern and you had a decent sporter for very little money.