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Unknown Primer

jvollenberg

Well-Known Member
Ordnance approved
This is an unknown primer ...

Interesting markings ... and it looks like it came from a Japanese cartridge case

122-MM
Case length: 583-MM
Rim diameter: 170-MM


Any ideas on these ...

Joe
 

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Hi Joe,

The case appears to be from a Japanese 12.7cm 40 Caliber Dual Purpose Gun with a case length of 583 mm (-22.95").

From my limited documentation, a complete 12.7cm round is approx 38.25" in length and as approx. projectile comparison, the 12cm 45 Calier semi-fixed projectile was -15.875" in height, giving a 12.7cm case length of -22.375" +/- 0.5". Other members may have more accurate case & projectile measurements.

The case has a date stamp of Showa 11/17, which is November, 1942 with a Kure arsenal anchor stamp.

The primer has three kanji characters stamped on it & looks like a dummy one or a transit plug to be replace by the "real McCoy" later on.

I'll have a closer look at the Kanji Characters later - have to go a earn a buck to pay for some recent "bits" :tinysmile_twink_t2:

Cheers
Drew
 
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