I'm going to look it up anyway, but I was curious if during ML season you have two black powder rifles with you while hunting? An example would be if I had my flintlock and in line in the same tree or blind.
Almost 100% certain that Ohio law states only one firearm per hunter. Even if you have a legal CCW pistol you are not permitted to shoot a deer with it.
Carry a handgun while hunting deer during the deer muzzleloader season and the archery season; have more than one firearm while hunting deer; carry a handgun being used during hunting in a concealed manner. Except as noted in No. 10 under A Deer Hunter Can Do the Following.