Ignition is to be wheel lock, matchlock,
flintlock, or percussion using original
style percussion caps that fit on the
nipple and are exposed to the weather.
"Exposed to the weather" means the
percussion cap or the frizzen must
be visible and not capable of being
enclosed by an integral part of the
weapon proper. Primers designed to
be used in modern cartridges are not
legal.
Straight from the washington state hunting regulations... I don't want people getting in trouble if they get stopped. I just had this arguement with my brothers father in law who has a in-line muzzle loader like the ones being discussed and after reading the regs he agrees 100% with me.