I have four Krag sporters and spend most of my range time with them shooting cast bullets exclusively. I have had my best results with the old traditional Ideal numbers 308284, 311274,311299 and 311290. I have shot a fair number of one inch, iron sighted, five shot groups at a hundred yards, and very many sub two inch groups. 311291 that is mentioned is another good one. I try to keep velocities about 1500 fps for mild report and recoil - and good results. I normally fire 300 five shot 30-40 groups over the course of a season.