I got out and chronographed my dixie slug handloads I was expecting 1075-1100 f.p.s.
I got

1160 average of 5 shot with a 16 fps spread

ft/lbs that is 1494 I think either thornily stopping power or taylor knock out scale are better indicators of performance on game because if you go by the foot lbs standard a 45-70 and 22-250 are about equal

on the thornily scale my loads are 199 hornady 20 ga sst sabot for reference are 125
taylor scale mine 52 hornady 29
Roy