I read your original post and thought, theres something really wrong
(Ive hunted IDAHO) and had no issues using my 62 caliber hawken style rifle
as I thought the regs specify a 50 caliber MINIMUM
on any-weapon hunts, the muzzleloader must comply with the same restrictions that apply to any centerfire weapon. These can be found on page 65 of the big game rules. In addition, the muzzleloader must be at least .45 caliber for deer, pronghorn or mountain lion and
at least .50 caliber for bighorn sheep, elk, moose, mountain goat or black bear.