For as long as I can remember the definition was #1. It never was perfect and ultimately allowed for almost all modern muzzleloaders including the use of even smokeless powder. I suspect Traditions lobbying efforts has paid off in a big way for them....no proof but just my opinion. Now its #2 which doesn't allow the use of the "projectile(s)"being loaded from the breech. Notice, in the same respect, the powder is not mentioned.
Just a side note....using the new definition the Ferguson flintlock rifle is still not be allowed.
1. Muzzleloading firearms are defined as those firearms which are incapable of being loaded from the breech.
2. Muzzleloading firearms are defined as those firearms in which a projectile (rifle) or projectiles (shotgun) must be loaded from the muzzle (front) end of the barrel and the firearm being of design and manufacture that prevents the projectile(s) from being loaded from the breech (rear) end.
Just a side note....using the new definition the Ferguson flintlock rifle is still not be allowed.
1. Muzzleloading firearms are defined as those firearms which are incapable of being loaded from the breech.
2. Muzzleloading firearms are defined as those firearms in which a projectile (rifle) or projectiles (shotgun) must be loaded from the muzzle (front) end of the barrel and the firearm being of design and manufacture that prevents the projectile(s) from being loaded from the breech (rear) end.