Calibre
(Redirected from Caliber)
A calibre (or caliber in American English) is the diameter of the barrel of a gun. For example, a rifle with a diameter of 0.22 inch is a .22 cal. Guns that have a particular calibre are designed to fit and use bullets of the same calibre.
Types of callibre
Callibre is measured in inches, not millimetres. Common callibres include:
Inch caliber | Metric caliber | Typical bullet diameter |
---|---|---|
.172 | 4 mm | 0.172 in |
.20, .204 | 5 mm | 0.204 in |
.221 | 5.45 mm | 0.221 in |
.22 | 5.6 mm | 0.223 in |
.224 | 5.7 mm | 0.224 in |
.243 | 6 mm | 0.243 in |
.25 | 6.35 mm | 0.257 in, 6.35 mm |
.26 | 6.5 mm | 0.264 in, 6.7 mm |
.27 | 6.8 mm | 0.277 in, 7.035 mm |
.284 | 7 mm | 0.284 in, 7.213 mm |
.308 | 7.62 mm | 0.308 in, 7.82 mm |
.311 | 7.9 mm | 0.311 in, 7.92 mm |
.312 | 7.94 mm | 0.312 in, 7.94 mm |
.323 | 8 mm | 0.323 in, 8.20 mm |
.327 | 8 mm | 0.327 in, 8.30 mm |
.338 | 8.6 mm | 0.338 in |
.355 | 9 mm | 0.355 in |
.356 | 9 mm | 0.356 in |
.357 | 9 mm | 0.357 in |
.363 | 9 mm | 0.363 in |
.365 | 9.3 mm | 0.365 in |
.375 | 9.5 mm | 0.375 in, 9.53 mm |
.40 | 10 mm | 0.400 in |
.44 | 10.9 mm | 0.429 in |
.45 | 11.43 mm | 0.451–0.454 in |
.50 | 12.7 mm | 0.510 in, 12.95 mm |
Calibre Media
Rifle cartridges: from left: 50 BMG • 300 Win Mag • 308 Winchester, 7.62 × 39 mm • 5.56 × 45 mm NATO • 22 LR
A 45 ACP hollowpoint (Federal HST) with two 22 LR cartridges for comparison
Side view of a Sellier & Bellot 45-cal ACP cartridge with a metric ruler for scale
References
- ↑ Accurate (2000). Accurate Smokeless Powders Loading Guide (Number Two (Revised) ed.). Prescott, AZ: Wolfe Publishing. p. 392. barcode 94794 00200.
- ↑ "Pistol and Rifle Lead Bullets". Archived from the original on 2020-10-05. Retrieved 2018-10-22.
- ↑ "Rifle Bullets". Archived from the original on 2020-10-05. Retrieved 2018-10-22.
- ↑ "LeadSafe Total Copper Jacket ("TCJ") Bullet List". Archived from the original on 1999-02-18. Retrieved 2018-10-22.
- ↑ Frank C Barnes (2015). Cartridges of the World (14th ed.). Gun Digest Books. ISBN 9781440242656.