Gun barrel

Details Gun barrel Gun barrel

1984-01-27

1985-07-09

Jordan, Charles T.

Firearms

Barrels

42 78, 89 1405, F41C 2100

Patent

active

045273480

ABSTRACT:
A gun barrel adapted to be connected to a receiver includes a rifled portion and a smoothbore portion. The rifled portion may have deeper than normal grooves to permit the escape of propellant gases past the bullet. The smoothbore portion includes an increased diameter expansion section, a reduced diameter compression section and an alignment section. Gases expanding past the bullet reduce the peak pressure in the gun barrel and provide a relatively low pressure adjacent the muzzle at the time of bullet exit. The improved gun barrel affords increased bullet velocity and accuracy, and reduced felt recoil.

REFERENCES:
patent: 157008 (1874-11-01), Kerr
patent: 315746 (1885-04-01), De Arguibel
patent: 460102 (1891-10-01), Carver
patent: 804483 (1905-11-01), Lincoln
patent: 1290840 (1919-01-01), Maynard
patent: 1355222 (1920-10-01), Pedersen
patent: 1355421 (1920-10-01), Pedersen
patent: 1777771 (1930-10-01), Scherf
patent: 2345089 (1944-03-01), Born
patent: 3138991 (1964-06-01), Malter
patent: 3525172 (1970-08-01), A'Costa
patent: 4126955 (1978-11-01), Coffield
"Big Bertha" Bombards Paris, by Jean Hallade (origin and date of publication presently unknown).

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