The penetration of the 24-pounder shot at 3,500 yards, in brick work, is 62 inches. The penetration of the 10-inch projectile will therefore be between six and seven feet into the same material.

This article was originally published with the title “ Three-Pounder Semi-Automatic Gun ” in Scientific American Magazine Vol. 81 No. 6 (August 1899), p. 88 doi:10.1038 ...