Any ammunition appropriate for the Swedish military Mausers is fine for the M1912 Norwegian Krag. Working pressure is the same. I use the same loads, including Swedish military ammo, in both and have no problems. Rarely, one might encounter ammo loaded for "modern" sporting arms at higher pressure - never seen any myself.

There are a number of folks posting on various firearms sites who seem to take pleasure in making doomsday warnings about this and other normal practices - often with no basis beyond hearsay or faulty logic.