6 mm caliber

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This article lists firearm cartridges which have a bullet caliber between 6.0 millimetres (0.236 in) and 7.0 millimetres (0.276 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[edit]

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)
6.5mm Bergmann 6.706 (.264) 22.1 (.87) 9.4 (.372) 9.3 (.368) 8.4 (.330) 7.2 (.285) 31.2 (1.23)
6.5×25mm 4.0 (.157) - - - - 29.7 (1.169)

Rifle cartridges[edit]

.24 in (6.2 mm)[edit]

Name Bullet Length Rim Base Shoulder Neck OAL
6mm Lee Navy 6.2 (.244) 60 (2.35) 11.4 (.448) 11.5 (.443) 10.2 (.402) 7.1 (.278) 79 (3.11)
.243 Winchester 6.17 (.243) 51.94 (2.044) 12.00 (.472) 11.96 (.470) 11.5 (.454) 7.01 (.276) 68.82 (2.709)
6mm Remington
(.244 Remington)[1]
6.18 (.243) 56.72 (2.233) 11.99 (.472) 11.96 (.471) 10.89 (.429) 7.01 (.276) 71.76 (2.825)
.240 Apex [2]
.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)
6mm PPC [3] 6.172 (.243) 38.48 (1.515) 11.30 (.445) 11.20 (.441) 10.95 (.431) 6.654 (.262) 53.34 (2.100)
6mm BR 6.17 (.243) 39.6 (1.560) 12.00 (.4728) 10.39 (.4091) 11.6 (.458) 6.95 (.274) -
6mm AR 6.2 (.243) 38.7 (1.525) 11.30 (.4449) 11.26 (.4433) 10.98 (.4323) 6.9 (.271) 57.4 (2.260)
6mm XC 6.1722 (.243) 48.2092 (1.898) 11.8872 (.468) 11.8364 (.466) 11.42 (0.450) 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 [4] 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) 2.78 (71) .532 (13.5) .508 (12.9) .445 (11.3) .263 (6.7) 3.58 (91)
6mm SAW 6.17 (.243) 45.01 (1.772) 10.36 (.408) 10.26 9.72 6.63 65.44 (2.576)

.25 in (6.5 mm)[edit]

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 [5] 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[6] 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 [7] 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 [8] 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 6.5 (.257) 65.0 (2.560) 13.6 (.534) 13.1 (.514) 12.6 (.496) 7.3 (.288) 81.5 (3.209)
.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)

.264 in (6.6 mm) and up[edit]

Name Bullet Length Rim Base Shoulder Neck OAL
6.5×50mmSR Arisaka 6.705 (.264) 50.39 (1.984) 11.84 (.466) 11.35 (.447) 10.59 (.417) 7.34 (.289) 75.69 (2.980)
6.5×53mmR 6.756 (.266) 53.59 (2.110) 13.40 (.527) 11.48 (.453) 10.75 (.423) 7.55 (.297) 77.56 (3.053)
6.5×54mm Mannlicher–Schönauer 6.705 (.264) 53.65 (2.112) 11.52 (.454) 11.47 (.452) 10.87 (.428) 7.56 (.288) 76.77 (3.022)
6.5×55mm Swedish
(aka 6.5×55mm Krag)
6.7 (.264) 54.864 (2.16) 12.192 (.480) 12.17 (.479) 10.688 (.420) 7.468 (.294) 80.010 (3.15)
6.5×58mm Vergueiro 6.65 (.262) 57.85 (2.278) 11.78 (.464) 11.88 (.468) 10.94 (.431) 7.56 (.298) 81.50 (3.209)
6.5×68mm 6.70 (.264) 67.50 (2.657) 13.00 (.512) 13.30 (.524) 12.18 (.480) 7.60 (.299) 86.50 (3.408)
6.5-284 6.70 (.264) 55.118 (2.170) 12.014 (.473) 12.725 (.501) 12.065 (.475) 7.544 (.297) 81.991 (3.228)
.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)
6.5×47mm Lapua 6.70 (.264) 47 (1.9) 12.01 (.473) 11.95 (.470) 11.53 (.454) 7.41 (.292) 70 (2.8)
6.5mm 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 Winchester Magnum 6.70 (.264) 64 (2.5) 13.5 (.532) 13.1 (.515) 12.5 (.491) 7.6 (.299) 85 (3.34)
6.5×52mm Carcano 6.80 (.268) 52.50 (2.067) 11.42 (.450) 11.42 (.450) 10.85 (.427) 7.52 (.296) -

See also[edit]

References[edit]

  1. ^ 6mm Rem data from Accurate Powder
  2. ^ Barnes, Frank C. (2006) [1965]. Skinner, Stan, ed. Cartridges of the World (11th ed.). Iola, WI, USA: Gun Digest Books. pp. 380, 408, 410. ISBN 0-89689-297-2. 
  3. ^ 6mm PPC data from Accurate Powder
  4. ^ .240 Wby data at Accurate Powder
  5. ^ ".25-35 Winchester data" from Accurate Powder
  6. ^ ".250-3000 Savage"data from Accurate Powder
  7. ^ ".257 Roberts" data from Accurate Powder
  8. ^ ".25-06 Remington" data from Accurate Powder