Originally posted by Turkey
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Scorpion replacment?
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there are none; the biggest guns the DF ever owned were the coastal guns of 6 and 9.2 inches respectively and they last fired in 1971 or so. The 76 in the Scorpion was a development of WW 2 ammunition. The nearest equivalent, in the DF, to the OTO 76mm round was the 17-pdr round of the antitank gun.....the OTO shell-cases are designed for autoloading but can be manually loaded if the feed system fails.
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A low pressure gun is one in which the cartridges are designed to deliberately slow the rate of expansion of the gases. Think of the 40mm grenade launcher, the M79. It's cartridge has two chambers within, so that when the primer fires, it doesn't flash all of the propellant at once, rather the gas path of the initial burning propellant is deliberately slowed by a metal or plastic barrier, before it can burn all of the rest of the propellant. It doesn't generate the kind of high case pressures and consequent high recoil. If it didn't, an M79 round would break your shoulder. The downside is comparatively short ranges.
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