When using heavy [hunting??] powder charges, most cartridge rifles seem to be consistently better shooters - that is, better accuracy at significantly higher muzzle velocities - when the bullet is harder than conicals that are loaded from the muzzle, and slightly larger than bore diameter. Sharps 1863s are in the "might work here, too" part of the continuum.
Breech seating its .54-caliber bullet to firmly engage rifling, would using a lubricated cast bullet harder than 16:1 lead:tin tend to improve that bullet's potential accuracy in 1863s?
Would casting that breech-seated bullet from a lead:tin:antimony mixture with an air dropped BHN above 12 tend to improve that bullet's potential accuracy in 1863s?
Bullet hardness/composition of lead mxture?
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Bullet hardness/composition of lead mxture?
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