That's a nice clean unaltered Krag. These are getting very hard to find as many were sporterized for hunting back in the day. The good news about that is brass and components are available to keep it shooting. The Krag is a single lug bolt so modest loading is recommended. IMHO this fine old war horse calls out for cast bullets and the Vintage Rifle Match at Ike's where we can all drool on it.
My Lyman manual recommends the #311284 210 grain cast gas check slug. That with some mid range loads of IMR-4198 around 20 grains would threat the old girl gently and most likely deliver some fine accuracy. Not that I am jealous or have given any attention to what having a rifle like yours would be like.