From the book "A Treatise on the Rifle, Musket, Pistol, and Fowling piece: embracing Projectiles and sharp-shooting:" by N. Bosworth, 1846: 'It has been ascertained, that a musket-ball of one ounce (437 grains, .685 inch in diameter, about 14 1/2 gauge, HGT), possessing a velocity of sixteen...