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BL 5.4-inch howitzer : ウィキペディア英語版 | BL 5.4-inch howitzer
The Ordnance BL 5.4-inch howitzer was a version of the British 5-inch howitzer designed for British Indian Army use, especially on the Northwest Frontier. ==History== The unusual calibre of 5.4 inches may have been determined by a requirement to fire a 60 lb shell. Since the 5-inch howitzer with its 50 lb shell was later found deficient in both firepower and range, it is possible the Indian Army may have foreseen this, and in fact the 5.4-inch could fire its 60 lb shell the same distance as the 5-inch fired its 50 lb shell i.e. 4800 yards. Also, Hogg & Thurston surmise that raw weight of shell was seen as necessary in India to "put a reasonable amount of fear into the hearts of obstreperous tribesmen inhabiting home-built but robust local fortresses":〔Hogg & Thurston 1972, page 122〕 different conditions than regular British Army artillery was expected to be employed in.
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