6 mm caliber
Encyclopedia
This article lists firearm
Firearm
A firearm is a weapon that launches one, or many, projectile at high velocity through confined burning of a propellant. This subsonic burning process is technically known as deflagration, as opposed to supersonic combustion known as a detonation. In older firearms, the propellant was typically...

 cartridges which have a bullet caliber
Caliber
In guns including firearms, caliber or calibre is the approximate internal diameter of the barrel in relation to the diameter of the projectile used in it....

 between 6 millimetre (0.236220472440945 in) and 7 millimetre (0.275590551181102 in).
  • Length refers to the cartridge case length.
  • OAL refers to the overall length of the cartridge.


All measurements are in mm (in).

Pistol cartridges

Name Bullet
Length Rim Base Shoulder Neck OAL
.25 ACP
.25 ACP
The .25 ACP centerfire pistol cartridge is a semi-rimmed, straight-walled pistol cartridge introduced by John Browning in 1905 alongside the Fabrique Nationale model 1905 pistol...

 
6.375 (.251) 15.62 (.615) 7.67 (.302) 7.06 (.278) N/A 7.06 (.278) 23.11 (.910)
6.5mm Bergmann
6.5mm Bergmann
The 6.5mm Bergmann is an unusual centerfire cartridge produced for very early self-loading pocket pistols. The case is bottle-necked and steeply conical, and headspaces on the conical case walls. Early versions were made without any rim or extraction groove; and relied upon blow-back for...

 
6.706 (.264)
6.5x25mm
6.5x25mm
The 6.5x25mm CBJ is a pistol cartridge designed for the CBJ-MS personal defence weapon. Capable of use in rebarreled 9 mm Parabellum firearms, the primary loading of the round fires a sabotted 4 mm tungsten sub-projectile.-See also:...

 
4.0 (.157) 29.7 mm (1.169)

.24in (6.2mm)

Name Bullet Length Rim Base Shoulder Neck OAL
6mm Lee Navy
6mm Lee Navy
The 6mm Lee Navy aka 6mm U.S.N. is an obsolete American rifle cartridge. It was the service cartridge of the United States Navy and Marine Corps from 1895, officially replacing the .45-70 Government round, and was the first small-bore high-velocity smokeless powder cartridge to be adopted by...

 
6.2 (.244) 60 (2.35) 11.4 (.448) 11.5 (.443) 10.2 (.402) 7.1 (.278) 79 (3.11)
.243 Winchester
.243 Winchester
The .243 Winchester is a popular sporting rifle cartridge. Initially designed as a varmint round, it is now more frequently used on medium to large game such as whitetail deer, mule deer, pronghorn, wild hogs, and even black bear and caribou...

 
6.1722 (.243) 51.9404 (2.0449) 12.0091 (.4728) 11.9608 (.4709) 13.82 (.544) 7.0104 (.276) 68.8289 (2.7098)
6 mm Remington
6 mm Remington
The 6mm Remington was introduced by Remington Arms Company in 1955 as the .244 Remington. It is based on necking down the .257 Roberts. Originally intended as a Varmint and predator cartridge, the .244 was never factory loaded with bullets over 90 grains. Rifles marked .244 Remington have a 1 in ...

 
(.244 Remington)
6.185 (.2435) 56.72 (2.233) 11.99 (.472) 11.96 (.471) 10.89 (.429) 7.01 (.276) 71.76 (2.825)
.240 Apex
.240 Apex
The .240 Apex is a centrefire sporting rifle cartridge developed in England in the 1920s, primarily for use in hunting deer and plains game...

 
.240 Magnum Rimless
.240 Magnum Flanged
H&H 240 Apex
.240 Belted Nitro Express
6.223 (.245) 63.25 (2.49) 11.86 (.467) 11.43 (.450) 10.24 (.403) 6.96 (.274) 81.53 (3.21)
6 mm PPC
6 mm PPC
The 6 mm PPC , or 6 PPC as it is more often called, is a centerfire rifle cartridge used almost exclusively for benchrest shooting. At distances out to 300 yards, it is one of the most accurate cartridges available...

 
6.172 (.243) 38.48 (1.515) 11.30 (.445) 11.20 (.441) 10.95 (.431) 6.654 (.262) 53.34 (2.100)
6 mm BR Remington  6.1722 (.243)
12.0091 (.4728) 10.3911 (.4091)
6.9596 (.274)
6 mm XC
6 mm XC
6 mm XC is a rifle cartridge, similar to the 6x47mm Swiss Match, that was developed specifically for NRA High Power match shooting by 11-time NRA High Power National Champion David Tubb...

 
6.1722 (.243) 48.2092 (1.898) 11.8872 (.468) 11.8364 (.466)
6.8834 (.271) 71.3232 (2.808)
.243 WSSM
.243 WSSM
The 243 Winchester Super Short Magnum or 243 WSSM is a rifle cartridge introduced in 2003. It uses a .300 WSM case shortened and necked down to accept a .243in/6mm diameter bullet, and is a high velocity round based on ballistics design philosophies that are intended to produce a high level of...

 
6.1722 (.243) 42.42 (1.670) 13.59 (.535) 14.1 (.555) 13.82 (.544) 7.39 (.291) 59.94 (2.360)
.240 Weatherby Magnum
.240 Weatherby Magnum
The .240 Weatherby Magnum was developed in 1968 by Roy Weatherby. In the development of his own .240in/6 mm cartridge, Weatherby was significantly influenced by both the success and the limitations of the .244 H&H Magnum cartridge devised in England by his friend and colleague David Lloyd. It was...

 
6.18 (.243) 63.40 (2.496) 12.00 (.472) 11.50 (.453) 10.40(.429) 6.90 (.272) 80.00 (3.10)
.244 H&H Magnum
.244 H&H Magnum
The .244 Holland & Holland Magnum cartridge was created in 1955 in Great Britain by deerstalker and rifle-maker David Lloyd of Pipewell Hall, Northamptonshire and Glencassley in Sutherland, Scotland, and is not to be confused with the smaller-cased and much milder 6 mm Remington...

 
6.223 (.245)
6 mm SAW
6 mm SAW
The 6 mm SAW describes an experimental series of cartridges developed in the 1970s for the U.S. Army. The cartridges were produced in a variety of sizes and from a variety of materials. The intent was to develop a cartridge that would replace all 5.56×45mm NATO weapons as well as most 7.62×51mm...

 
6.17 (.243) 45.01 (1.772) 10.36 (.408) 10.26 9.72 6.63 65.44 (2.576)

.25in (6.5mm)

Name Bullet Length Rim Base Shoulder Neck OAL
.25-20 Winchester
.25-20 Winchester
-External links:* * *...

 
6.55 (.258) 33.78 (1.33) 10.36 (.408) 8.86 (.349) 8.46 (.333) 6.96 (.274) 40.44 (1.592)
.25-35 Winchester
.25-35 Winchester
The .25-35 Winchester, or WCF was introduced in 1895 by Winchester for the Winchester Model 1894 lever action rifle...

 
6.55 (.258) 51.89 (2.043) 12.85 (.506) 10.73 (.422) 9.26 (.365) 7.15 (.282) 64.77 (2.55)
.250-3000 Savage
.250-3000 Savage
The .250-3000 Savage is a rifle cartridge created by Charles Newton in 1915 and is also known as the .250 Savage. The name comes from its original manufacturer, Savage Arms and the fact that the original load achieved a 3000 ft/s velocity with an 87 grain bullet.-Background:Charles Newton...

 
6.553 (.258) 48.46 (1.912) 12.01 (.473) 11.91 (.469) 10.51 (.414) 7.26 (.286) 63.88 (2.515)
.257 Roberts
.257 Roberts
The .257 Roberts a medium powered .25 caliber cartridge known affectionately as the Bob. It has been described as the best compromise between the low recoil and flat trajectory of smaller calibers such as the .22 and 6mm, and the strong energy but not the strong recoil of larger popular hunting...

 
6.553 (.258) 56.72 (2.233) 12.01 (.473) 11.99 (.427) 10.92 (.430) 7.36 (.290) 70.49 (2.775)
.25-06 Remington
.25-06 Remington
The .25-06 Remington had been a wildcat cartridge for half a century before being standardized by Remington in 1969. It is based on the .30-06 Springfield cartridge necked-down to .257 inch caliber with no other changes...

 
6.541 (.2575) 63.35 (2.494) 12.01 (.473) 11.94 (.470) 11.20 (.441) 7.37 (.290) 82.55 (3.250)
.257 Weatherby Magnum
.257 Weatherby Magnum
The .257 Weatherby Magnum is a .25 Caliber belted bottlenecked cartridge. It is one of the original standard length magnums developed by shortening the .375 H&H Magnum case to approx....

 
6.5 (.257) 65.0 (2.560) 13.6 (.534) 13.1 (.514) 12.6 (.496) 7.3 (.288) n/a (n/a)
.256 Win Magnum
.256 Winchester Magnum
The .256 Winchester Magnum was a firearms cartridge developed by Winchester, and was produced by necking-down a .357 Magnum cartridge to .257 diameter. It was designed for shooting small game and varmints. Introduced in 1960, Winchester offered ammo and reloading components into the early 1990s....

 
6.528 (.257) 32.54 (1.281) 11.18 (.440) 9.677 (.381) 9.347 (.368) 6.528 (.257) 40.39 (1.590)

.264in (6.6mm) and up

Name Bullet Length Rim Base Shoulder Neck OAL
6.5 x 50 SR Arisaka  6.705 (.264) 50.39 (1.984) 11.84 (.466) 11.35 (.447) 10.59 (.417) 7.34 (.289)
6.5 x 53.5 R Dutch Mannlicher 6.756 (.266) 53.59 (2.110) 13.40 (.527) 11.48 (.453) 10.75 (.423) 7.55 (.297)
6.5x54 mm Mannlicher-Schönauer
6.5x54mm Mannlicher-Schönauer
The 6.5x54 Mannlicher-Schönauer also known as 6.5x54 Mannlicher-Schönauer Greek is a 6.5 mm rifle cartridge used in the Mannlicher-Schönauer rifle...

 
6.705 (.264) 53.65 (2.112) 11.52 (.454) 11.47 (.452) 10.87 (.428) 7.56 (.288)
6.5x55 mm Krag 
6.5x55 Swedish
6.7 (.264) 54.864 (2.16) 12.192 (.480) 12.17 (.479) 10.688 (.420) 7.468 (.294) 80.010 (3.15)
6.5 x 68  6.70 (.264) 75.02 (2.956) 13.00 (.512) 13.30 (.524) 12.18 (.480) 7.60 (.299) 86.50 (3.408)
6.5-284  6.70 (.264) (2.170) (.473) (.500) (.475) (.295) (3.110)
.260 Remington
.260 Remington
The .260 Remington cartridge was introduced by Remington in 1997. Many wildcat cartridges based on the .308 Winchester case had existed for years before Remington standardized this round...

 
6.70 (.264) 51.7 (2.035) 12.0 (.473) 11.9 (.470) 11.5 (.454) 7.5 (.297) 71 (2.8)
6.5 mm Creedmoor
6.5 mm Creedmoor
The 6.5 Creedmoor is a centerfire rifle cartridge introduced by Hornady in 2007. When loaded with heavier bullets, cartridges such as the 6.5x55 and 6.5-284 are capable of greater muzzle velocity due to their longer cases and larger powder capacity...

 
6.70 (.264) 48.8 (1.924) 12.01 (.473) 11.9 (.470) 11.7 (.459) 7.54 (.297) 71.6 (2.82)
6.5x47mm Lapua
6.5x47mm Lapua
6.5x47mm Lapua is a rifle cartridge that was developed specifically for 300m competition by ammunition maker Nammo Lapua and the Swiss rifle manufacturer Grünig & Elmiger AG in 2005.-Features:The cartridge has many special features including: :...

 
6.70 (.264) 47 (1.9) 12.01 (.473) 11.95 (.470) 11.53 (.454) 7.41 (.292)
6.5 mm Grendel  6.70 (.264) 38.7 (1.524) 11.2 (.441) 11.14 (.439) 10.87 (.428) 7.44 (.293) 57.5 (2.264)
.264 Win Magnum
.264 Winchester Magnum
The .264 Winchester Magnum is a belted, bottlenecked rifle cartridge. Apart from the .257 Weatherby Magnum, it is the smallest caliber factory cartridge which uses the standard length Holland & Holland belted magnum case...

 
6.70 (.264) 64 (2.5) 13.5 (.532) 13.1 (.515) 12.5 (.491) 7.6 (.299) 85 (3.34)
6.5 x 52 mm Carcano
6.5 x 52 Mannlicher-Carcano
6.5×52mm Carcano or 6.5×52mm Mannlicher-Carcano is an Italian military 6.8 mm rimless bottle-necked rifle cartridge, developed from 1889 to 1891 and used in the Carcano 1891 rifle and many of its successors. A common synonym in US gun literature is "6.5mm Italian"...

 
6.80 (.268) 52.50 (2.067) 11.42 (.450) 11.42 (.45) 10.85 (.427) 7.52 (.296)

See also

  • 2 mm (.079 in)
    2 mm caliber
    This article lists firearm cartridges which have a bullet in the .079 in / 2 mm caliber range.Length refers to the cartridge case length. OAL refers to the overall length of the cartridge...

     - 3 mm (.118 in)
    3 mm caliber
    This article lists firearm cartridges which have a bullet in the .118 in / 3 mm caliber range.Length refers to the cartridge case length.OAL refers to the overall length of the cartridge.All measurements are in mm .-.118 in / 3 mm auto cartridges:...

     - 4 mm (.157 in)
    4 mm caliber
    This article lists firearm cartridges which have a bullet in the .172 in / 4.5mm caliber range.*Length refers to the cartridge case length.*OAL refers to the overall length of the cartridge.All measurements are in mm .-Rimfire cartridges:...

     - 5 mm (.197 in)
    5 mm caliber
    This article lists firearm cartridges which have a bullet in the to caliber range.*Length refers to the cartridge case length.*OAL refers to the overall length of the cartridge.All measurements are in mm .-Rimfire cartridges:...

     - 6 mm (.236 in) - 7 mm (.276 in)
    7 mm caliber
    This article lists firearm cartridges which have a bullet in the to caliber range.*Length refers to the cartridge case length.*OAL refers to the overall length of the cartridge....

     - 8 mm (.315 in)
    8 mm caliber
    This article lists firearm cartridges which have a bullet in the to caliber range.*Length refers to the empty cartridge case length.*OAL refers to the overall length of the loaded cartridge.All measurements are in mm .-Pistol cartridges:...

     - 9 mm (.354 in)
    9 mm caliber
    This article lists firearm cartridges which have a bullet in the caliber range. The most prevalent of these rounds is the 9x19mm Parabellum.*Length refers to the cartridge case length.*OAL refers to the overall length of the cartridge....

     - 10 mm (.394 in)
    10 mm caliber
    This article lists firearm cartridges which have a bullet in the caliber range.*Length refers to the cartridge case length.*OAL refers to the overall length of the cartridge.All measurements are in mm .-Pistol cartridges:...

     - 11 mm (.433 in)
    11 mm caliber
    This article lists firearm cartridges which have a bullet in the through caliber range.All measurements are in millimeters .-Pistol cartridges:-Revolver cartridges:-Rifle cartridges:-See also:...

     - 12 mm (.472 in)
    12 mm caliber
    This article lists firearm cartridges which have a bullet in the to caliber range.*Length refers to the cartridge case length.*OAL refers to the overall length of the cartridge.*Bullet refers to the diameter of the bullet....

     - 13 mm (.5118 in)
    13 mm caliber
    This article lists firearm cartridges which have a bullet in the caliber range and greater.*Length refers to the cartridge case length.*OAL refers to the overall length of the cartridge.*Bullet refers to the diameter of the bullet....

  • List of cartridges by caliber
  • List of handgun cartridges
  • List of rifle cartridges
  • 6.8 mm Remington SPC
    6.8 mm Remington SPC
    The 6.8 mm Remington SPC is a rifle cartridge that was developed with collaboration from individual members of United States Special Operations Command . Based upon the .30 Remington cartridge, it is midway between the 5.56×45mm NATO and 7.62×51mm NATO in bore diameter and velocity...

  • .280 British
    .280 British
    The .280 British was an experimental intermediate rifle cartridge. It was later designated 7 mm MK1Z, and has also been known as 7 mm NATO, .280/30, .280 Enfield, .280 NATO, 7 mm FN Short, and 7×43mm. It was designed by the British Army in the late 1940s, with subsequent help from...

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