Section R. 299.673a - Use of muzzle-loading firearms; prohibited actsRule 3a. A person using a muzzle-loading or black powder firearm shall not do any of the following on a designated shooting range:
(a) Use any powder other than black powder, pyrodex, or other black powder substitute.(b) Store black powder or pyrodex in other than the original container, flask, or cow horn. The original containers, flask, or cow horn shall contain not more than 1 pound of black powder, pyrodex, or other black powder substitute.(c) Load a muzzle-loading firearm from anything other than a separate powder measure. Loading a muzzle-loading firearm from an original container, flask, or cow horn, even if equipped with a measuring device, is prohibited.(d) Except while loading, have open containers of black powder or flammable powder solvent on the firing line.Mich. Admin. Code R. 299.673a