Full gain twist ratchet rifling

Details Full gain twist ratchet rifling Full gain twist ratchet rifling

1981-12-21

1984-03-20

Jordan, Charles T.

Firearms

Barrels

Rifling or lining

F41C 2100

Patent

active

044372515

ABSTRACT:
Improved ratchet rifling with a full gain twist is provided in the form of a bore portion having a smooth bore for initially receiving and holding a projectile without marring the projectile followed by gradually emerging ratchet rifling contour with each spin-imparting edge progressively deepening, at least by crest or minor-radius portions "falling" inward toward the axis of the bore and as an alternative by base or major-radius portion increasing in distance from the bore axis, in either case resulting in projectile-seating increasing in predetermined proportion to twist along the barrel.

REFERENCES:
patent: 338192 (1886-03-01), Rubin
patent: 835482 (1906-11-01), Vulpius
patent: 4308681 (1982-01-01), Gorman

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