Micro-adjustable case neck turning tool

Details Micro-adjustable case neck turning tool Micro-adjustable case neck turning tool

1992-04-21

1994-05-10

Rosenbaum, Mark

Turning

Lathe

Portable

82162, B23B 500

Patent

active

053098013

ABSTRACT:
A micro-adjustable case neck turning tool which provides the mechanical capability for case neck trimming blade vernier driven vertical displacement adjustment and set in measured increments of 0.0002-inch and interpolated increments of 0.0001-inch for achieving consistent close tolerance trimming and trueing of the outside diameter of a cartridge case neck, thereby to uniformily undersize the same for close tolerance receiving and positioning thereof upon cartridge lock-up within a firearm chamber and thus increase the inherent cartridge factor accuracy by reducing substantially the potential for a mis-aligned angle of incidence in the bullet-to-bore relationship upon discharge delivery of a bullet from the case mouth into the firearm barrel.

REFERENCES:
patent: 2064661 (1936-12-01), Hammond
patent: 3137914 (1964-06-01), Manshel
patent: 3750618 (1973-08-01), Griebenow
patent: 4178189 (1979-12-01), Mancini et al.
Advertisement, Marquart Precision Case Neck Turning Tool (undated).

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