Your Krag should be a fine Deer rifle, for woodland hunting, as is.

Take 'her' to the Range and try some 180 grain Remington or Winchester factory ammo. You will have fun, guaranteed!

(Save the Brass for future reloading fun).

It appears your stock is a model 1898 stock that was altered to accept a model 1896 action.

Your front-sight is the 1905 sight for the 1903 Springfield. It appears neatly mounted.
There are commercial sight-blades that can replace the military blade and improve the sight-picture for Hunting.