Talk:12 mm caliber

.500 S&W Magnum
.500 S&W Magnum
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

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Current style

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:

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

Hi, just a short proposal: I'm not sooo experienced with those specifications but it would be a good idea to give the used measure for each column. Just like its nearly useless to me to read that some are mm and others are caliber/inch; how about stating in the table which is actually used for which? 78.48.0.63 (talk) 12:20, 12 February 2009 (UTC)[reply]

References

^ dimensions from Barnes, Frank C. Cartridges of the World. (Northfield: DBI Books, 1972), p.236.
^ dimensions from Barnes, Frank C. Cartridges of the World. (Northfield: DBI Books, 1972), p.236.

There is at least one more

12 mm Lefaucheux 2600:1000:B161:5AAE:0:6E:8FA9:2E01 (talk) 13:04, 2 January 2023 (UTC)[reply]

[1] sions from Barnes, Frank C. Cartridges of the World. (Northfield: DBI Books, 1972), p.236.

[2] sions from Barnes, Frank C. Cartridges of the World. (Northfield: DBI Books, 1972), p.236.

[1]

[2]