Section 13.01.08.406 - SPECIAL WEAPON SEASONS - MUZZLELOADER01.Muzzleloader Only Season. It is unlawful to take a big game animal with any firearm, including muzzleloading pistols, or implement other than a muzzleloading rifle or musket that complies with each of the following: a. Is at least forty-five (.45) caliber for deer, pronghorn, mountain lion, or gray wolf, or at least fifty (.50) caliber for elk, moose, bighorn sheep, mountain goat or black bear.b. Is capable of being loaded only from the muzzle.c. Is equipped only with open or peep sights.d. Is loaded only with loose black powder including synthetic black powder.e. Is equipped with no more than two (2) barrels.f. Is loaded only with a projectile with a diameter within one hundredth (.01) of an inch of the bore diameter.g. Is equipped only with flint, musket cap, or percussion cap. 209 primers are prohibited.h. Is equipped with an exposed ignition system.i. Is loaded only with a patched round ball or conical metal or metal alloy projectile, with the exception of allowance of accuracy tips and pressure bases.02.Pelletized Powder. It is unlawful to use pelletized powder in a Muzzleloader Only season.03.Sabot. It is unlawful to use a sabot in a Muzzleloader Only season.Idaho Admin. Code r. 13.01.08.406