I have two .25-20s, one a 15” BF single shot with 1:10” twist. The only cast I’ve tried is a 90-grain LBT with GC. It groups under 0.75 moa with the right cast load, under 0.55 moa with a 75-grain jacketed. With good bullets twist rate is not as important as many people think - as long as the bullet is stable and you don’t want BR accuracy.


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