Modern muzzleloading rifles range from reproductions of sidelock, flint and percussion long guns, to in-line rifles that use modern inventions such as a closed breech and sealed primer.

 Muzzleloading can apply to anything from cannons to pistols but in modern times the term most commonly applies to black powder small arms.

 It usually, but not always, involves the use of a loose propellant (i.e. gun powder) and projectile, as well as a separate method of ignition or priming.

 Loading a muzzleloading rifle, in general, the sequence of loading is to put in: gunpowder, either by inserting premeasured pellets, pouring in loose powder, or by inserting a pre-measured bag of gunpowder usually called a "cartridge", gunpowder used is typically blackpowder or blackpowder substitutes like Pyrodex, then wadding, soft material like cloth or paper; with round balls, it is wrapped around the base of the ball and called a "patch", the purpose of which is to grip the rifling and impart spin to the loose fitting ball, minie and maxi bullets, no patch is used as the projectile has a hollow base or gas rings which expands to grip the rifling, a tool called a "ramrod" is used to push the items down the barrel and then seated firmly together against the breech, at this point the rifle has been charged and not fully loaded, it is then primed which completes the loading process.

 Muzzleloading rifles prime differently from sidelock, flint and percussion long guns, to in-line rifles that use modern inventions such as a closed breech and sealed rifle or shotgun primer.

 When aiming for ultimate accuracy, muzzleloading rifles are usually cleaned ("swabbed") before reloading, so that there is no residue left in the barrel to reduce accuracy, though in competitions run by the international governing body, the MLAIC, this is prohibited.

 Large caliber muzzle-loaders such as cannons are always swabbed between shots to prevent accidents.

 Muzzleloading is the term used to describe the sport, or pastime of firing muzzleloading guns. Muzzleloading guns, both antique and reproduction, are used for target shooting, hunting, historical re-enactment and historical research.

 The Muzzleloading sport originated in the United States of America in the 1930s, just as the last original users and makers of muzzleloading arms were dying out.

 The sport received a tremendous boost in the 1960s and 1970s, and a flourishing industry manufacturing working reproductions of historic firearms now exists in the United States.

 In more recent years, most states in the United States of America have now added special muzzleoader hunting seasons for big game hunting, the amount of revenue this generates helps boost those states economy.