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Does a 3 inch 12,5 pounder (or 12,5 CWT) exist?
- Thread starter Hoeksel
- Start date
Eggburt1969
Well-Known Member
Do you meant Q.F 12-pdr. 12-cwt, which is full is 'Quick Fire Twelve Pounder, Twelve Hundredweight'.
The 'twelve pounder' bit is the nominal projectile weight in pounds, which were about 3" (three inches, so approx 76.2 mm) in calibre.
The 'twelve hundredweight' bit is the approximate weight of the gun assembly, so 12 × 112 lb = 1,344 lb (approx. 610 kg).
The projectiles are often stated to weigh 12.5 lb, so this is where you may be getting the "12.5" figure from. The data I have says are either nominally12 lb 15 oz (12.9375 lb, approx. 5.9 kg) or 12 lb 8 oz (12.5 lb, approx. 5.7 kg) in weight.
The 'twelve pounder' bit is the nominal projectile weight in pounds, which were about 3" (three inches, so approx 76.2 mm) in calibre.
The 'twelve hundredweight' bit is the approximate weight of the gun assembly, so 12 × 112 lb = 1,344 lb (approx. 610 kg).
The projectiles are often stated to weigh 12.5 lb, so this is where you may be getting the "12.5" figure from. The data I have says are either nominally12 lb 15 oz (12.9375 lb, approx. 5.9 kg) or 12 lb 8 oz (12.5 lb, approx. 5.7 kg) in weight.
I saw somewhere a handbook for 12 1/2 PR GUN (1902) : https://viewer.slv.vic.gov.au/?entity=IE5298891&mode=browse
From BOCN :
Thanks all, but I really mean 3 inch 12,5 Pdr or CWT. The link to the manual is for a 75 mm gun as used in the Boer war as well (I know at least 2 models). Attached a head stamp of why I am asking this. I also have a comparable head stamp where i.s.o. 12.5 the number 6 is mentioned, and that is for a 57 mm 6 Pdr. Hence my assumption 12.5 is for Pdr or maybe CWT.
Shown shell case (not in my posession) should measure 76.2x219DR89 and I have not yet been able to identify this shell case.
Shown shell case (not in my posession) should measure 76.2x219DR89 and I have not yet been able to identify this shell case.
Attachments
I thought that info on the fuze would be useful to the discussion and confirm the identification of the gun:
Fuze, Time and Percussion, 17 second, No 59
Design RL 11380. A Krupp design originally, submitted by Vickers, Son & Maxim in 1902 for the QF 12 ½ pr shrapnel.
The fuze was in two parts: the body, with time rings and magazine; and the 'igniter' containing the ignition and percussion arrangements.
The body was carried screwed into the shell, the hole being covered, and the igniter unit was inserted prior to loading.
The object behind all this was to obviate accidents due to vibration when carried in limbers.
Mk 1 List of Change §11465 of 1/5/1902 Introduced with the 12 ½ pr gun.
Obsolete: List of Change §14827 of 11/3/1909