In Washington state, it's illegal to carry a concealed handgun while bow hunting, even if you have a permit. However, meth use is out of control around here, and there are a fair number of pot growing operations tucked out in the woods. The meth use is so prevalent, local docs figure that up to 40% of the babies born in this town were exposed to meth in the womb. On top of that, theft of game, especially bull elk, has always been a possible source of trouble while hunting. If I start bow hunting again, it will be with a S&W M60 tucked into my pocket, strictly for two-legged problems.
Muzzle loaders can pack a handgun, as long as it's also a black powder gun. Cap and ball revolvers are allowed, and I would not feel poorly armed with a .44 caliber 1858 Remington replica, or a Ruger cap and ball revolver.