Conical bullets are every bit as accurate as sabots. Every muzzleloading company that has won The Manufacture Shoot at the NMLRA has used lead conical bullets. Even Knight used 'em in 2006 when they won. I hunt deer with conicals weighing 460-496gr with just 70gr of powder.

Busta at Greybeards is shooting the 350gr Hornady with 80gr of Blackhorn 209 with great results.