hington Navy Yard, many naval officers and-re- where the breech block presentatives of the press. and elevating band were It was intended to fire ten also fitted. The rifling and rounds as rapidly as possi- chamber reaming were ble with full charges—the beautifully done, and re- regular naval gun… … terrific explosion twist of rifling, followed. The air from 1 turn in 180 was filled with to 1 turn in 30 gauges uainjured. The metal into the grooves of chase and muzzle were pro- the rifling, and thus gives jected forward 10 feet, rotation to the projectile. THE FRACTURFG while the shell probably…
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