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.32 Winchester Special

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Not to be confused with .32-20 Winchester, .32-40 Winchester, or .32 Winchester Self-Loading.
.32 Winchester Special
.32 Winchester Special in 165 grain Hornady FTX (left) and 170 grain Remington SP (right)
TypeRifle
Place of originUnited States
Production history
DesignerWinchester
Designed1899
Produced1899–present
Specifications
Parent case.38-55 Winchester
Case typeRimmed, bottleneck
Bullet diameter.321 in (8.2 mm)
Land diameter.315 in (8.0 mm)[1]
Neck diameter.343 in (8.7 mm)
Shoulder diameter.401 in (10.2 mm)
Base diameter.422 in (10.7 mm)
Rim diameter.506 in (12.9 mm)
Rim thickness.063 in (1.6 mm)
Case length2.040 in (51.8 mm)
Overall length2.565 in (65.2 mm)
Case capacity45 gr H2O (2.9 cm3)
Rifling twist1 in 16 in (410 mm)
Primer typeLarge rifle
Maximum pressure42,000 psi (290 MPa)
Ballistic performance
Bullet mass/type Velocity Energy
170 gr (11 g) JFP 2,283 ft/s (696 m/s) 1,968 ft⋅lbf (2,668 J)
165 gr (11 g) FTX 2,410 ft/s (730 m/s) 2,128 ft⋅lbf (2,885 J)
Source(s): Hodgdon[2]

The .32 Winchester Special / 8.2x51mmR (or .32 WS) is a rimmed cartridge created in October 1898 for use in the Winchester Model 94 lever-action rifle.[3] It is similar in name but unrelated to the .32-20 Winchester cartridge (which is also known as .32 WCF).

History

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The .32 Winchester Special cartridge, like the .30-30 Winchester cartridge of 1895, is necked down from the .38-55 Winchester cartridge of 1884. The .32 Winchester Special (.321 in) differs from the .30-30 Winchester (.308 in) in bullet diameter. More significantly, Winchester decreased the rate of rifling twist in their Model 94 rifle, from 1:12 when chambered for the .30-30 to 1:16 when chambered for the .32 Winchester Special. Winchester used the slower twist to reduce fouling retention when creating a new cartridge for sportsmen who wanted to reload their own ammunition using black powder and cast bullets.[4] It was also marketed as something more powerful than the .30-30 and yet had less recoil than the .30-40 Krag, AKA .30 Army.[3][5] This new cartridge enjoyed only moderate success, and remained hampered by the small selection of available bullets in the .321 diameter.[3] There is a wide selection of bullet types and weights for the .30-30, while the only commonly available bullets in .321 diameter are 170 grain and 165 grain. Also, due to the slow twist of the barrel, accuracy suffered when the barrel exhibited wear.[citation needed]

The .32 WS cartridge

Performance

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Ballistics are similar to the .30-30 cartridge and its .308 caliber (7.62 mm) bullet, but the larger diameter .321 (8.15 mm) bullet of the .32 WS will create a larger wound. However, given the same weight of bullet in both calibers, the .30 caliber has a greater sectional density, and correspondingly greater penetration.[citation needed] According to Winchester's original claims, the .32 WS has 5-10% more energy than the .30-30 at close ranges, and less at longer ranges due to increased drag due to the .321's greater diameter and reduced sectional density.[6]

Dimensions

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See also

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References

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  1. ^ "C.I.P. TDCC datasheet 32 Win. Spec" (PDF). CIP. Archived from the original (PDF) on 2023-04-30.
  2. ^ ".32 Winchester Special (rifle) data Archived 2007-11-11 at the Wayback Machine" from Hodgdon
  3. ^ a b c Hornady (2003). Hornady Handbook of Cartridge Reloading. vol I (6th ed.). Grand Island, NE, USA: Hornady Mfg Co. pp. 488, 489.
  4. ^ Hornady (1967). Hornady Handbook of Cartridge Reloading. vol I (1st ed.). Grand Island, NE, USA: Hornady Mfg Co. p. 218.
  5. ^ Barnes, Frank C. (2006) [1965]. Skinner, Stan (ed.). Cartridges of the World (11th ed.). Iola, WI, USA: Gun Digest Books. p. 72. ISBN 0-89689-297-2.
  6. ^ "What Makes It Special? Archived 2012-01-13 at the Wayback Machine" by M.L. McPherson at Levergun.com
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