Muzzleloader systems include a pre-packaged propellant charge and primer for providing efficient loading and unloading of the muzzleloader. The muzzleloader accepts in the breech end the propellant containment vessel that abuts against a constriction portion with a reduced diameter portion. The propellant containment vessel having an end portion with a tapered surface that conforms to the constriction portion surface. A projectile is inserted in the muzzle end and seats against the constriction portion. The propellant containment vessel may be received in a removable breech plug. The constriction portion may be part of the breech plug or a separate component secured in the barrel by way of the breech plug. The containment vessel further comprises a primer mechanism that may be integrated into the proximal end of the containment vessel.

Provided are a combined loading device and method. The combined loading device includes a first housing in which a shell is inserted; a second housing in which a charge is inserted, the second housing being connected to the first housing; a first support located in the first housing and configured to allow the shell or the charge to be seated thereon and linearly moved; and a driving unit located inside the first housing, connected to the first support, and configured to move the first support on which the shell is seated.

Muzzleloader systems include a pre-packaged propellant charge and primer for providing efficient loading and unloading of the muzzleloader. The muzzleloader accepts in the breech end the propellant containment vessel that abuts against a constriction portion with a reduced diameter portion. The propellant containment vessel having an end portion with a tapered surface that conforms to the constriction portion surface. A projectile is inserted in the muzzle end and seats against the constriction portion. The propellant containment vessel may be received in a removable breech plug. The constriction portion may be part of the breech plug or a separate component secured in the barrel by way of the breech plug. The containment vessel further comprises a primer mechanism that may be integrated into the proximal end of the containment vessel.

An ammunition system and associated ammunition for firearms, particularly for muzzleloader firearms, having a predetermined amount of propellant charge housed in a casing, and a separate projectile having a sabot. The casing has a cap sealing the casing muzzle end such that the cap and the sabot provide seals to trap propellant gases within the barrel behind the projectile upon firing. The cap top end and sabot bottom end interlock in mechanical communication with one another upon firing allowing the projectile exiting the barrel muzzle end to be responsive to the barrel rifling. The barrel breech end has a chamber bushing for receiving the casing and a tapered muzzle end to prohibit the projectile from entering the casing.

An ammunition system and associated ammunition for firearms, particularly for muzzleloader firearms, having a predetermined amount of propellant charge housed in a casing, and a separate projectile having a sabot. The casing has a cap sealing the casing muzzle end such that the cap and the sabot provide seals to trap propellant gases within the barrel behind the projectile upon firing. The cap top end and sabot bottom end interlock in mechanical communication with one another upon firing allowing the projectile exiting the barrel muzzle end to be responsive to the barrel rifling. The barrel breech end has a chamber bushing for receiving the casing and a tapered muzzle end to prohibit the projectile from entering the casing.

A bullet assembly comprising a bullet and a cup assembly, the cup assembly may have a ring portion for scraping the barrel of a muzzleloader. The cup assembly may be slidable on the bullet with an extended position and a contracted position, the contracted position having a greater diameter than the extended position. A contraction inhibiting member that requires shearing off of the member for contraction may be disposed on one of the components.