Current loads:
Light - 150 gr. Sierra Gameking with 37.5 gr of Reloader7 for 2600fps and a ballistic efficiency of 32.1% @ 48124 PSI
Medium - 165 gr. Hornady Interlock SP with 35.5 gr. of Reloader7 for 2455fps and a ballistic efficiency of 33.3% @ 47825 PSI
Heavy - 180 gr. Hornady Interlock SP with 33.8 gr. of Reloader7 for 2327fps and a ballistic efficiency of 34.3% @ 47513 PSI (shot a 6" group at 300 yards with irons)
These are all at my 48K limit and aren't max loads; below I'll put max loads for modern. I have a soldered underlug on my converted barrel, so I'm keeping the pressures down in the safe range for my 1898 Krag for safety sake. My intention is to get a good 200 to 220 gr. gas checkable lead bullet mold and clean the copper fouling and change this over to a cast only gun. I just cannot get the mold I want currently. With these three loads though currently I feel pretty solid on taking most medium to big game in N. A. It's a super light rifle and I've put a Williams Guide Receiver Sight (WGRS) on the rear with a Marbles .577 1/16 gold bead on the front. Makes for a nice powerful carry gun.
Maximum MODERN 30-30 converted barrel only! Back off 10% and work up!
Light - 150 gr. Sierra Gameking with 39.5 gr of Reloader7 for 2703fps and a ballistic efficiency of 3% @ 54897 PSI
Medium - 165 gr. Hornady Interlock SP with 37.5 gr. of Reloader7 for 2556fps and a ballistic efficiency of 4.1% @ 54834 PSI
Heavy - 180 gr. Hornady Interlock SP with 35.8 gr. of Reloader7 for 2426fps and a ballistic efficiency of 34.7% @ 54726 PSI