Trial Trip of the "Morning Star"

1863 Scientific American  
a 300-pounder, this .gun is claiIned to be capable of effectually gone through the plate with a 156 Ths. shell throwing projectiles of varIOUS forms and weight, and 25 Ths. of powder as Sir William had with his from 250 Ths. up to 410 Ths: Sir William's 300-pounder 286 Th. shell and 45 Ths_ of powder. Owing to the weighs less than 12 tuns. flaw in its breech no further trials were made with The first shots, three in number, were fired from this gun. the old Amooth-bore 68-peunder wIth the usual
more » ... nder wIth the usual ser-Mr. Lynall Thomas's gun was the next competitor. vice cha.rge of 16 Ths_ of powder; these were directed Unfortunately the gun was not well pointed, and its a�itiSf the 5t, 6t and 7t-inch plates, and were im-first 330 Th. shot missed the target altogether. The mediately followed by three shots from Sir William's next shot, weighing 307 Ths., and fired with a 50 Th. nO-pounder, loaded' with special steel projectiles charge of powder, struck the hollow part of the tar weighing 65 Th3. ,a nd fired with the same service charge get, where it was 7 t inches thick, and bent the as the smooth-bore 68-pounder. Where the 68plate. The third shot was more successful. It was pounder had struck, the indentation varied from 2t a steel projectile of 330 Ths. weight, fired with the inches to 3 inches in depth; where the steel shot of same charge. It struck on the edge of the 7 t -inch Armstrong's had hit, the mark was in one case plate, and made it-,. broken indentation to the depth deeper, and the plate showed a perceptible crack of lO t inches, sufficient to establish the most alarm about 8 inches long, though apparently of very trifl-ing leak in the side of �ny veEsel. The terminal ve ing depth. But the most careful examination failed loci ties of both these last shots were lower than any to discover any mark on the back of the target to fired, which was attributed tQ what is believed to be uhow'that it had been hit at all. the excessive pitch in tlie mode of ribbed rifling Th� next shot was fired from Si; '\Yilliam's 300adopted by Mr. Thomae.
doi:10.1038/scientificamerican04251863-258 fatcat:oetpwxrn4rdvnbvi5xxeo3ctfa