.495 roundballs for a .50 caliber weigh 182 grains.
.530 roundballs for a .54 weigh 224 grains.
.535 roundballs weigh 230 grains.
Just to help you compare the two calibers.
Of course, if you want kick, Minié bullets for a .58 weigh 535 or so grains.
(Minié is pronounced min-e-AY, the accent on the last syllable, named after the person who invented it.)