Talk:12 mm caliber

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This is the current style

Name Bullet Length Rim Base Neck OAL
.50 Action Express 12.7 (.500) 32.64 (1.285) 13.06 (.514) 13.89 (.547) 13.72 (.540) 40.89 (1.610)
.50 Action Express 12.7 (.500) 32.64 (1.285) 13.06 (.514) 13.89 (.547) 13.72 (.540) 40.89 (1.610)
.50 GI 12.7 (.50) 12.19 (.480) 13.36 (.526) 31.01 (1.221)

I propose this:

Name Case type Bullet diameter Neck diameter Shoulder diameter Base diameter Rim diameter Case length Cartridge length
.470 Nitro Express[1] rimmed bottleneck 12.27 (.483) 12.7 (.500) 13.41 (.528) 14.53 (.572) 16.41 (.646) 82.55 (3.25) 98.04 (3.86)
.475 Nitro Express[2] rimmed straight 12.09 (.476) 12.75 (.502) - 13.84 (.545) 15.77 (.621) 83.82 (3.30) 97.03 (3.82)
.50 Action Express case type 12.7 (.500) 13.72 (.540) 13.89 (.547) 13.06 (.514) 32.64 (1.285) 40.89 (1.610)

Tell me the first is more intuitively useful... Or look at this:

.500 S&W Magnum
Type
Place of origin
Specifications
Bullet diameter .500 in (12.7 mm)
Neck diameter .526 in (13.4 mm)
Base diameter .526 in (13.4 mm)
Rim diameter .556 in (14.1 mm)
Case length 1.625 in (41.3 mm)
Overall length 2.10 in (53 mm)
Primer type Large pistol

Trekphiler 05:48 & 06:21, 16 August 2007 (UTC)