6 mm caliber

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This article lists firearm cartridges which have a bullet caliber between 6 mm (.236 in) and 7 mm (.284 in).

  • Length refers to the cartridge case length.
  • OAL refers to the overall length of the cartridge.

All measurements are in mm (in).

Contents

Pistol cartridges

Name Bullet Length Rim Base Shoulder Neck OAL
.25 ACP 6.375 (.251) 15.62 (.615) 7.67 (.302) 7.06 (.278) N/A 7.06 (.278) 23.11 (.910)
6.5 mm Bergmann 6.706 (.264) - - - - - -


Rifle cartridges

Up to .243in (6.1mm)

Name Bullet Length Rim Base Shoulder Neck OAL
.243 Win 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
(.244 Remington)[1]
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 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 [2] 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 6.1722 (.243) 48.2092 (1.898) 11.8872 (.468) 11.8364 (.466) - 6.8834 (.271) 71.3232 (2.808)
.243 WSSM 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 [3] 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 6.223 (.245) - - - - - -

.25in (6.5mm)

Name Bullet Length Rim Base Shoulder Neck OAL
.25-20 Winchester 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 [4] 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[5] 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 [6] 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 [7] 6.541 (.2575) 63.35 (2.494) 12.01 (.473) 11.94 (.470) 11.20 (.441) 7.37 (.290) 82.55 (3.250)
.256 Win Magnum 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) -
6.5x55 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 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 6.70 (.264) 48.8 (1.924) 12.01 (.473) 11.9 (.470) 11.7 (.459) 7.54 (.297) 71.6 (2.82)
6.5x47mm Lapua 6.70 (.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)
6.5 x 52 mm Carcano 6.807 (.268) 52.50 (2.067) 11.42 (.450) 11.42 (.45) 10.85 (.427) 7.52 (.296) -

See also

References

  1. 6mm Rem data from Accurate Powder
  2. 6mm PPC data from Accurate Powder
  3. .240 Wby data at Accurate Powder
  4. ".25-35 Winchester data" from Accurate Powder
  5. ".250-3000 Savage"data from Accurate Powder
  6. ".257 Roberts" data from Accurate Powder
  7. ".25-06 Remington" data from Accurate Powder
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