Ammunition case neck sizing die

Details Ammunition case neck sizing die Ammunition case neck sizing die

1986-12-04

1988-02-09

Terapane, John F.

Ammunition and explosive-charge making

Ammunition loading

Implements, including resizing, reconditioning

29 13, 86 23, 86 36, 86 37, 86 41, F42B 3300, F42B 3502, F42B 3310

Patent

active

047234725

ABSTRACT:
A cylindrical mandrel is inserted through the neck of an ammunition case coaxially with the body of the case after which a collet is driven axially onto the neck to form the inside diameter of the neck to the outside diameter of the mandrel without changing the diameter of the case body. In another embodiment an annular bushing of elastomeric material is confined in a space around the neck and the bushing is compressed axially to cause it to bulge radially inwardly so as to apply a force for forming the neck to the mandrel.

REFERENCES:
patent: 2571272 (1951-10-01), Martin
patent: 2748648 (1956-06-01), Miller
patent: 3283643 (1966-11-01), Mittelsteadt
patent: 3580127 (1968-08-01), Lee
patent: 3705515 (1972-12-01), Lee
patent: 4133249 (1979-01-01), Bachhuber et al.
patent: 4385546 (1983-05-01), Lee
patent: 4593598 (1986-06-01), Gunder
patent: 4637291 (1987-01-01), Alexander

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