This is a list of firearm cartridges which have bullets of a caliber between and .
- Length refers to the cartridge case length
- OAL refers to the overall length of the cartridge
Measurements are in millimeters then inches, i.e. mm (in).
Pistol cartridges
<!--|+6 mm auto cartridges-->
{| class="wikitable sortable" style"font-size: 9pt; width:700px; text-align:center"
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! Name || Bullet || Case type || Case length || Rim || Base || Shoulder || Neck || OAL
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| .25 ACP (.25 Auto) || 6.375 (.251) || || 15.62 (.615) || 7.67 (.302) || 7.06 (.278) ||- || 7.06 (.278) || 23.11 (.910)
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| .25 NAA || 6.375 (.251) || || 18.9 (.744) || 8.6 (.339) || 8.6 (.337) || 8.5 (.333) || 7.0 (.276) || 24.4 (.960)
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| 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)
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| 6.5×25mm CBJ || 4.0 (.157) || || || - || - || - || - || 29.7 (1.169)
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Revolver cartridges
{| class="wikitable sortable" style="font-size: 9pt; width:700px; text-align:center"
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! Name || Bullet || Length || Rim || Base || Shoulder || Neck || OAL
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Rifle cartridges
.24 in (6.2 mm)
<!--|+6 mm rifle cartridges-->
{| class="wikitable sortable" style="font-size: 9pt; width:700px; text-align:center"
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! Name !! data-sort-type="number"|Bullet !! data-sort-type="number"|Case length !! data-sort-type="number"|Rim !! data-sort-type="number"|Base !! data-sort-type="number"|Shoulder !! data-sort-type="number"|Neck !! data-sort-type="number"|OAL
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| .243 Winchester || 6.17 (.243) || 51.94 (2.035) || 12.00 (.472) || 11.96 (.470) || 11.5 (.454) || 7.01 (.276) || 68.82 (2.709)
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| 6mm BR || 6.17 (.243) || 39.6 (1.560) || 12.00 (.4728) || 11.96 (.4709) || 11.6 (.458) || 6.95 (.274) || || 6.172 (.243) || 38.48 (1.515) || 11.30 (.445) || 11.20 (.441) || 10.95 (.431) || 6.654 (.262) || 53.34 (2.100)
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| 6mm XC|| || || || || || ||
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| .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)
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| 6mm ARC || 6.18 (.243) || 37.85 (1.49) || 11.201 (.4410) || || 10.924 (.4301) || 6.96 (.274) || 57.40 (2.260)
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| 6mm GT || 6.180 (.2433) || 43.82 (1.725) || 11.96 (.471) || 11.946 (.4703) || 11.660 (.5490) || 6.73 (.273) || 63.88 (2.515) to 67.06 (2.640)
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| 6mm Remington <br>(.244 Remington) || 6.18 (.243) || 56.72 (2.233) || 11.99 (.472) || 11.96 (.471) || 10.89 (.429) || 7.01 (.276) || 71.76 (2.825)
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| .240 Weatherby Magnum || 6.18 (.243) || 63.40 (2.496) || 12.00 (.472) || 11.50 (.453) || 10.40(.429) || 6.90 (.272) || 80.00 (3.10)
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| 6mm Creedmoor || 6.182 (.2434) || 48.77 (1.920) || 11.99 (.472) || 11.946 (.4703) || 11.735 (.4620) || 7.01 (.276) || 71.12 (2.800)
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| 24 Nosler || 6.185 (.2435) || 40.64 (1.600) || 9.60 (.378) || 10.686 (.4207) || 10.249 (.4035) || 6.833 (.2690) || 57.40 (2.260)
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| 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)
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| 6×45mm || 6.2 (.243) || 45 (1.76) || 9.6 (.378) || 9.6 (.377) || 9 (.354) || 6.9 (.272) || 57.40 (2.260)
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| 6mm Lee Navy || 6.2 (.244) || 60 (2.35) || 11.4 (.448) || 11.5 (.443) || 10.2 (.402) || 7.1 (.278) || 79 (3.11)
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| .240 Apex<br> .240 Magnum Rimless<br> .240 Magnum Flanged<br> H&H 240 Apex<br>.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)
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| .244 H&H Magnum || 6.223 (.245) || 71 (2.78) || 13.5 (.532) || 12.9 (.508) || 11.3 (.445) || 6.7 (.263) || 91 (3.58)
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.25 in (6.5 mm)
<!--|+6 mm rifle cartridges-->
{| class="wikitable sortable" style="font-size: 9pt; width:700px; text-align:center"
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! Name || data-sort-type="number"|Bullet || Case length || data-sort-type="number"|Rim || Base || Shoulder || data-sort-type="number"|Neck || OAL
|-
| .25-25 Stevens
| 6.5 (.257)
| 60.2 (2.37)
| 9.6 (.376)
| 8.2 (.323)
| -
| 7.2 (.282)
| 66.8 (2.63)
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| .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)
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| .25-45 Sharps || 6.53 (.257) || 44.7 (1.76) || 9.6 (.378) || 9.6 (.376) || 8.99 (.3539) || 7.2 (.284) || 57.4 (2.26)
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| .257 Weatherby Magnum || 6.535 (.2573) || 64.74 (2.549) || 13.50 (.5315) || 12.997 (.5117) || 12.49 (.492) || 7.24 (.285) || 81.51 (3.209)
|-
| .25 Remington
| 6.54 (.257)
| 52.1 (2.05)
| 10.6 (.419)
| 10.6 (.419)
| 10.1 (.396)
| 7.3 (.286)
| 64.3 (2.53)
|-
| 255 GS
|
|
|
|
|
| tapering to
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| .25-06 Remington || 6.541 (.2575) || 63.35 (2.494) || 12.01 (.473) || 11.94 (.470) || 11.20 (.441) || 7.37 (.290) || 82.55 (3.250)
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| .25 WSSM || 6.55 (.258) || 51.89 (2.043) || 12.85 (.506) || 10.73 (.422) || 9.26 (.365) || 7.15 (.282) || 64.77 (2.55)
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| .250-3000 Savage || 6.553 (.258) || 48.46 (1.912) || 12.01 (.473) || 11.91 (.469) || 10.51 (.414) || 7.26 (.286) || 63.88 (2.515)
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| .257 Roberts || 6.553 (.258) || 56.72 (2.233) || 12.01 (.473) || 11.99 (.472) || 10.92 (.430) || 7.36 (.290) || 70.49 (2.775)
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.26 in (6.6 mm) and up
<!--|+6 mm rifle cartridges-->
{| class="wikitable sortable" style="font-size: 9pt; width:700px; text-align:center"
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! Name || data-sort-type="number"|Bullet !! data-sort-type="number"|Case length !! data-sort-type="number"|Rim !! data-sort-type="number"|Base !! data-sort-type="number"|Shoulder !! data-sort-type="number"|Neck || OAL
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|6.45×48mm XPL Swiss
|6.65 (.262)
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| 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)
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| 6.5×55mm Swedish <br> <small>(aka 6.5×55mm Krag)</small> || 6.7 (.264) || 54.864 (2.16) || 12.192 (.480) || 12.17 (.479) || 10.688 (.420) || 7.468 (.294) || 80.010 (3.15)
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| 6.5×57mm Mauser || 6.70 (.264) || 56.70 (2.232) || 11.95 (.470) || 11.90 (.469) || 10.94 (.431) || 7.65 (.301) || 82.0 (3.228)
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| 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 Norma || 6.70 (.264) || 55.118 (2.170) || 12.014 (.473) || 12.725 (.501) || 12.065 (.475) || 7.544 (.297) || 81.991 (3.228)
|-
|6.5mm Remington Magnum
|6.70 (.264)
|55.1 (2.170)
|13.51 (.532)
|13.51 (.532)
|12.6 (.495)
|7.6 (.298)
|71.1 (2.80)
|-
|6.5-06 A-Square
|6.70 (.264)
|63.3 (2.494)
|12.014 (.473)
|11.93 (.470)
|11.24 (.443)
|7.5 (.296)
|87.3 (3.44)
|-
|.256 Newton
|6.70 (.264)
|61.976 (2.440)
|12.014 (473)
|11.963 (.471)
|10.617 (.418)
|7.391 (.291)
|86.36 (3.40)
|-
| .260 Remington || 6.70 (.264) || 51.7 (2.035) || 12.0 (.473) || 11.9 (.470) || 11.5 (.454) || 7.5 (.297) || 71 (2.8)
|-
| 6.5mm 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)
|-
| 6.5×50mmSR Arisaka || 6.705 (.264) || 50.39 (1.984) || 11.84 (.466) || 11.35 (.447) || 10.59 (.417) || 7.34 (.289) || 75.69 (2.980)
|-
| 6.5×54mm 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 G.A.P. 4S
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| 6.5 Weatherby Rebated Precision Magnum
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| 6.5 PRC
| 6.716 (.2644)
| 51.56 (2.030)
| 13.51 (.532)
| 13.513 (.5320)
| 13.101 (.5158)
| 7.54 (.297)
| 75.06 (2.955)
|-
| 6.5-300 Weatherby Magnum
| 6.716 (.2644)
| 71.76 (2.825)
| 13.50 (.5315)
| 12.997 (.5117)
| 12.498 (.4920)
| 7.493 (.2950)
| 91.44 (3.600)
|-
| 26 Nosler
|-
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See also
- .25 caliber