.40-65 Winchester

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.40-65 Winchester
Place of originUSA
Bullet diameter.406 in (10.3 mm)
Neck diameter.423 in (10.7 mm)
Shoulder diameter.560 in (14.2 mm)
Base diameter.504 in (12.8 mm)
Rim diameter.604 in (15.3 mm)
Case length2.1 in (53 mm)
Overall length2.48 in (63 mm)
Rifling twist1:20 to 1:26
Primer typelarge rifle
Ballistic performance
Bullet mass/type Velocity Energy
260 gr (17 g) 1,500 ft/s (460 m/s) 1,308 ft⋅lbf (1,773 J)
260 gr (17 g) 1,720 ft/s (520 m/s) 1,708 ft⋅lbf (2,316 J)
260 gr (17 g) 1,420 ft/s (430 m/s) 1,165 ft⋅lbf (1,580 J)
Source(s): Barnes & Amber

The .40-65 Winchester (also called the .40-65 Winchester and Marlin)[1] was an American rifle cartridge.

Introduced in 1887 for the Winchester Model 1886, and available in Winchester single shots and in the Marlin Model 1895, it was "a further effort to put more steam" in repeating rifle cartridges.[2] In the modern era, the cartridge has gained favor for metallic silhouette shooting and Black Powder Cartridge Rifle matches where it serves as a low-recoil alternative to the common 45–70.[3][4]

It was commercially available in black and smokeless varieties until around 1935, and can be handloaded by reforming .45-70 brass.[2]


The nomenclature of the period was based on several properties of the cartridge:

  • .40: nominal caliber in inches: 0.40 inches (10.2 mm); actual caliber was .406 in ( mm)[5]
  • 65 : weight of propellant (black powder) charge, in grains: 65 grains (4.2 g)

See also[edit]


  1. ^ Barnes, Frank C., ed. by John T. Amber. Cartridges of the World (Northfield, IL: DBI Books, 1972), p.94, ".40-65 Winchester" ISBN 0-695-80326-3.
  2. ^ a b Barnes, and Amber, p.94.
  3. ^ Sam Fadala (17 November 2006). The Complete Blackpowder Handbook. Gun Digest Books. pp. 278–. ISBN 0-89689-390-1.
  4. ^ Venturino, Mike. "BPCR Silhouette: An Enduring Sport Combining Skill With Rifle, Bullet And Loading Press". Guns Magazine (November 2013). Archived from the original on 2015-01-18. Retrieved 2015-07-02.
  5. ^ Barnes, and Amber, p.123.