Legal for what? Here are the regs:
1 To hunt deer, pronghorn or bear, conical bullets must be a minimum of .40
caliber, and round-ball bullets must be a minimum of .50 caliber
2 To hunt elk or moose, conical bullets must be a minimum of .50 caliber, and
round-ball bullets must be a minimum of .54 caliber.
.
3 From .40 caliber to .50 caliber, bullets must weigh a minimum of 170 grains.
4 If greater than .50 caliber, bullets must weigh a minimum of 210 grains.
5 l. Sabots are prohibited during muzzleloading seasons.
So for 50-54 caliber bullets, as long as it's not a sabot it's legal. That's a long list.
