My dad and I are thinking of doing muzzle loading for deer next year. I've been looking through the hunting pamphlet and I'm a little confused. The hunting pamphlet for Washington states that "Ignition is to be wheellock, match-lock, flintlock, or percussion using original style percussion caps that fit on the nipple and are exposed to the elements." What does this mean and what ml rifles are allowed? Are 209 caps allowed? I assume that rifles like the TC Omega are not allowed, since they are 'sealed' from the elements.

Thanks,
Matt