An air gun for use with a source of pressurized air and a plurality of rounds of magnetically responsive spherical ammunition having a caliber, the air gun comprising: a hand grip, said source of pressurized air pneumatically connectable to a first end of the hand grip, the hand grip having a first passageway therethrough from the first end of the hand grip to a second end of the hand grip, the second end of the hand grip pneumatically connected to a first end of an air feed line, the air feed line having a second passageway therethrough from the first end of the air feed line to a second end of the air feed line, the second end of the air feed line pneumatically connected to a chamber, the chamber having a breech end of a gun barrel pneumatically connected thereto, the gun barrel having a muzzle, the gun barrel, the chamber, and the first and second passageways forming a continuous air flow conduit for air from the source of pressurized air to flow to and exit from the muzzle, the breech end of the gun barrel, the chamber, and the second end of the air feed line being magnetically non-responsive materials, the chamber further having a magnet disposed at the chamber, with the magnetic influence of the magnet exerting magnetic force within the chamber, the chamber having an aperture on a top side of the chamber, the chamber yet further having a gravity feed thereto, the gravity feed disposed above the aperture, the gravity feed, the aperture, the gun barrel, and the chamber having respective inner diameters larger than such caliber, said air gun being configured such that when a first one of such plurality of rounds of magnetically responsive spherical ammunition leaves the gravity feed, it falls into the chamber and into the magnetic influence of the magnet, the magnet tending to hold such first round in place in the chamber until the air pressure expels such first round from the chamber into the barrel and thence from the muzzle. a hand grip, said source of pressurized air pneumatically connectable to a first end of the hand grip, the hand grip having a first passageway therethrough from the first end of the hand grip to a second end of the hand grip, the second end of the hand grip pneumatically connected to a first end of an air feed line, the air feed line having a second passageway therethrough from the first end of the air feed line to a second end of the air feed line, the second end of the air feed line pneumatically connected to a chamber, the chamber having a breech end of a gun barrel pneumatically connected thereto, the gun barrel having a muzzle, the gun barrel, the chamber, and the first and second passageways forming a continuous air flow conduit for air from the source of pressurized air to flow to and exit from the muzzle, the breech end of the gun barrel, the chamber, and the second end of the air feed line being magnetically non-responsive materials, the chamber further having a magnet disposed at the chamber, with the magnetic influence of the magnet exerting magnetic force within the chamber, the chamber having an aperture on a top side of the chamber, the chamber yet further having a gravity feed thereto, the gravity feed disposed above the aperture, the gravity feed, the aperture, the gun barrel, and the chamber having respective inner diameters larger than such caliber, said air gun being configured such that when a first one of such plurality of rounds of magnetically responsive spherical ammunition leaves the gravity feed, it falls into the chamber and into the magnetic influence of the magnet, the magnet tending to hold such first round in place in the chamber until the air pressure expels such first round from the chamber into the barrel and thence from the muzzle.