You're right, Jerry - round balls are ballistic failures - especially on paper. It is amazing how well they do on game, though, even at what would be considered long range. Although Kipp killed his moose at too long a range for his rifle, the fact that it happened is in the books. I'd not take such a shot on a moose or elk with less than a 16 bore, and then, not without proper sighting. Single rear sights don't fit that category. For the .54, I'd make sure the large game animal was within 110 yards - closer is better. The more powder, the flatter the trajectory. Since we can't get Swiss Powder here, it's GOEX and around 120gr. 2F would be my hunting load. With that load, no elevation allowance would be needed from 25 yards to 110yards. The ball would be within 2 1/2" or less.