.70-150 Winchester
Type Rifle
Place of origin USA
Service history
In service None
Production history
Designed Around 1888
Manufacturer Winchester
Produced never
Bullet diameter .705 in (Bad rounding hereScript error mm)
Neck diameter .725 in (Bad rounding hereScript error mm)
Shoulder diameter .790 in (Bad rounding hereScript error mm)
Base diameter .805 in (Bad rounding hereScript error mm)
Rim diameter .870 in (Bad rounding hereScript error mm)
Case length 2.18 in (Bad rounding hereScript error mm)
Overall length 2.63 in (Bad rounding hereScript error mm)
Rifling twist 1:16
Primer type large rifle

The .70-150 Winchester is a hypothetical American centerfire rifle cartridge.

Appearing on cartridge boards of the Winchester Repeating Arms Company in 1888, it may have been nothing more than a display novelty based on a brass 12-gauge shotshell (rather than the paper cases common at the time, or plastic frequently seen today), shortened and necked-down slightly.[1] Only one rifle was ever chambered for it, and it was never offered commercially.[2]

See alsoEdit


  1. Barnes, p.118, ".70-150 Winchester"; Foster, Paul, Gun Digest 1952, p.173.
  2. Barnes, p.118, ".70-150 Winchester".


  • Barnes, Frank C., ed. by John T. Amber. ".70-150 Winchester", in Cartridges of the World, pp.118 & 124. Northfield, IL: DBI Books, 1972. ISBN 0-695-80326-3.

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