RB's have the advantage in low trajectory, and if properly matched to the gun are capable of excellent accuracy in ctg. guns as well as muzzleloaders.

The develpment of breachloading which allowed guns to shoot hardened conical bullets, gave the conical dangerous game gun a penetration advantage over the hardened round balls used in ML's. Until the advent of breechloaders, hardened round balls ruled as THE dangerous game projectiles, as they out penetrated the soft lead conicals needed for muzzleloading.

I am not certain I would give up the flatter trajectory of a round ball for that slow moving conical, but the conical does allow one to play with 'Forsyth's' 'shells'.