6 mm caliber explained

Above:	6 mm caliber
Data6:	Firearm cartridges

This is a list of firearm cartridges which have bullets of a caliber between 6mm and 6.99mm.

• 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

Name	Bullet	Case type	Case length	Rim	Base	Shoulder	Neck	OAL
.25 ACP (.25 Auto)	6.375 (.251)		15.62 (.615)	7.67 (.302)	7.06 (.278)	-	7.06 (.278)	23.11 (.910)
	6.375 (.251)		18.9 (.744)	8.6 (.339)	8.6 (.337)	8.5 (.333)	7.0 (.276)	24.4 (.960)
	6.706 (.264)		22.1 (.87)	9.4 (.372)	9.3 (.368)	8.4 (.330)	7.2 (.285)	31.2 (1.23)
	4.0 (.157)			-	-	-	-	29.7 (1.169)
	-	-	-	-	-	-	-	--->

Rifle cartridges

.24 in (6.2 mm)

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
	6.17 (.243)	51.94 (2.035)	12.00 (.472)	11.96 (.470)	11.5 (.454)	7.01 (.276)	68.82 (2.709)
	6.17 (.243)	39.6 (1.560)	12.00 (.4728)	11.96^[1] (.4709)	11.6 (.458)	6.95 (.274)	62mm
	6.17 (.243)	45.01 (1.772)	10.36 (.408)	10.26	9.72	6.63	65.44 (2.576)
6mm 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)
6mm XC^[3]
	6.1722 (.243)	42.42 (1.670)	13.59 (.535)	14.1 (.555)	13.82 (.544)	7.39 (.291)	59.94 (2.360)
	6.18 (.243)	37.85 (1.49)	11.201 (.4410)	0.441inches	10.924 (.4301)	6.96 (.274)	57.40 (2.260)
6mm GT^[4]	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)
6mm Remington (.244 Remington)^[5]	6.18 (.243)	56.72 (2.233)	11.99 (.472)	11.96 (.471)	10.89 (.429)	7.01 (.276)	71.76 (2.825)
.240 Weatherby Magnum^[6]	6.18 (.243)	63.40 (2.496)	12.00 (.472)	11.50 (.453)	10.40(.429)	6.90 (.272)	80.00 (3.10)
6mm Creedmoor^[7]	6.182 (.2434)	48.77 (1.920)	11.99 (.472)	11.946 (.4703)	11.735 (.4620)	7.01 (.276)	71.12 (2.800)
24 Nosler^[8]	6.185 (.2435)	40.64 (1.600)	9.60 (.378)	10.686 (.4207)	10.249 (.4035)	6.833 (.2690)	57.40 (2.260)
	6.2 (.243)	38.7 (1.525)	11.30 (.4449)	11.26 (.4433)	10.98 (.4323)	6.9 (.271)	57.4 (2.260)
	6.2 (.243)	45 (1.76)	9.6 (.378)	9.6 (.377)	9 (.354)	6.9 (.272)	57.40 (2.260)
	6.2 (.244)	60 (2.35)	11.4 (.448)	11.5 (.443)	10.2 (.402)	7.1 (.278)	79 (3.11)
.240 Apex^[9] .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)
	6.223 (.245)	71 (2.78)	13.5 (.532)	12.9 (.508)	11.3 (.445)	6.7 (.263)	91 (3.58)
	-	-	-	-	-	-	--->

.25 in (6.5 mm)

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)
	6.528 (.257)	32.54 (1.281)	11.18 (.440)	9.677 (.381)	9.347 (.368)	6.528 (.257)	40.39 (1.590)
	6.53 (.257)	44.7 (1.76)	9.6 (.378)	9.6 (.376)	8.99 (.3539)	7.2 (.284)	57.4 (2.26)
.257 Weatherby Magnum^[10]	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^[11]						tapering to
.25-06 Remington^[12]	6.541 (.2575)	63.35 (2.494)	12.01 (.473)	11.94 (.470)	11.20 (.441)	7.37 (.290)	82.55 (3.250)
.25 WSSM	6.541 (.2575)	42.42 (1.670)	13.59 (.535)	14.097 (.5550)	13.826 (.5443)	7.595 (.2990)	59.94 (2.360)
	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^[13]	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^[14]	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^[15]	6.553 (.258)	56.72 (2.233)	12.01 (.473)	11.99 (.472)	10.92 (.430)	7.36 (.290)	70.49 (2.775)
	-	-	-	-	-	-	--->

.264 in (6.6 mm) and up

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
6.45×48mm XPL Swiss	6.65 (.262)
	6.65 (.262)	57.85 (2.278)	11.78 (.464)	11.88 (.468)	10.94 (.431)	7.56 (.298)	81.50 (3.209)
6.5×55mm 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)
	6.70 (.264)	56.70 (2.232)	11.95 (.470)	11.90 (.469)	10.94 (.431)	7.65 (.301)	82.0 (3.228)
	6.70 (.264)	67.50 (2.657)	13.00 (.512)	13.30 (.524)	12.18 (.480)	7.60 (.299)	86.50 (3.408)
	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)
	6.70 (.264)	51.7 (2.035)	12.0 (.473)	11.9 (.470)	11.5 (.454)	7.5 (.297)	71 (2.8)
	6.70 (.264)	48.8 (1.924)	12.01 (.473)	11.9 (.470)	11.7 (.459)	7.54 (.297)	71.6 (2.82)
	6.70 (.264)	47 (1.9)	12.01 (.473)	11.95 (.470)	11.53 (.454)	7.41 (.292)	70 (2.8)
	6.70 (.264)	38.7 (1.524)	11.2 (.441)	11.14 (.439)	10.87 (.428)	7.44 (.293)	57.5 (2.264)
	6.70 (.264)	64 (2.5)	13.5 (.532)	13.1 (.515)	12.5 (.491)	7.6 (.299)	85 (3.34)
	6.705 (.264)	50.39 (1.984)	11.84 (.466)	11.35 (.447)	10.59 (.417)	7.34 (.289)	75.69 (2.980)
	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^[16]
6.5 Weatherby Rebated Precision Magnum^[17]	0.264abbr=valuesNaNabbr=values	2.57abbr=valuesNaNabbr=values	0.473abbr=valuesNaNabbr=values	0.5abbr=valuesNaNabbr=values	0.4739abbr=valuesNaNabbr=values	0.295abbr=valuesNaNabbr=values	3.34abbr=valuesNaNabbr=values
6.5 Precision Rifle Cartridge^[18]	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^[19]	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	6.718 (.2645)	65.79 (2.590)	13.56 (.534)	13.970 (.5500)	13.399 (.5275)	7.544 (.2970)	84.84 (3.340)
	6.756 (.266)	53.59 (2.110)	13.40 (.527)	11.48 (.453)	10.75 (.423)	7.55 (.297)	77.56 (3.053)
6.5×52mm Carcano	6.80 (.268)	52.50 (2.067)	11.42 (.450)	11.42 (.450)	10.85 (.427)	7.52 (.296)	^[20]
	-	-	-	-	-	-	--->

See also

• .25 caliber

Notes and References

1. Web site: 6mm BR Norma. 2015. C.I.P.. 2020-10-15.
2. Web site: 6mm PPC data from Accurate Powder . 2007-08-20 . https://web.archive.org/web/20070928014437/http://www.accuratepowder.com/data/PerCaliber2Guide/Rifle/Standarddata(Rifle)/243Cal(6.17mm)/6mm%20PPC%20page%20202.pdf . 2007-09-28 . dead.
3. Web site: 6 XC. 2008-04-15. C.I.P.. 2021-08-04.
4. Web site: 6mm GT [6mm GT]]. 2022-01-16. SAAMI. 2024-01-26.
5. Web site: 6mm Rem data from Accurate Powder . 2007-08-20 . https://web.archive.org/web/20081006040648/http://www.accuratepowder.com/data/PerCaliber2Guide/Rifle/Standarddata(Rifle)/243Cal(6.17mm)/6mm%20Remington%20pages%20207%20and%20208.pdf . 2008-10-06 . dead.
6. Web site: .240 Wby data at Accurate Powder . 2007-08-17 . https://web.archive.org/web/20081006040930/http://www.accuratepowder.com/data/PerCaliber2Guide/Rifle/Standarddata(Rifle)/243Cal(6.17mm)/240%20Weatherby%20Magnum%20page%20209.pdf . 2008-10-06 . dead .
7. Web site: 6mm Creedmoor. 2017-06-14. SAAMI. 2020-10-07.
8. Web site: 24 Nosler [24 Nosler]]. 2017-06-14. SAAMI. 2020-10-13.
9. Book: Barnes , Frank C. . Skinner, Stan . Cartridges of the World . 11th . 1965 . 2006 . Gun Digest Books . Iola, WI, USA . 380, 408, 410 . 0-89689-297-2.
10. [Sporting Arms and Ammunition Manufacturers' Institute|SAAMI]
11. Web site: 255 GS. 2010-05-26. C.I.P.. 2020-10-13.
12. ".25-06 Remington " data from Accurate Powder
13. ".25-35 Winchester data " from Accurate Powder
14. ".250-3000 Savage"data from Accurate Powder
15. ".257 Roberts " data from Accurate Powder
16. [Commission internationale permanente pour l'épreuve des armes à feu portatives|C.I.P.]
17. Web site: 6.5 Wby RPM Max Cartridge. 2019-07-05. Weatherby. 2020-10-15.
18. Web site: 6.5 Precision Rifle Cartridge [6.5 PRC]]. 2018-06-13. SAAMI. 2020-10-07.
19. Web site: 6.5-300 Weatherby Magnum [6.5-300 WBY MAG]]. 2017-01-16. SAAMI. 2020-10-13.
20. [Commission internationale permanente pour l'épreuve des armes à feu portatives|C.I.P.]