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Quote[/b] ]In tests conducted at the H. P. White Laboratory, Eel Aire, Maryland, on 1 July 1970, an 85 caliber lead ball of 890 grains (about 2.3 ounces), driven by 215 grains of black powder (0.49 ounces), typically produced a muzzle velocity of about 1,100 feet per second. Sixteenth century Spanish musketeers almost certainly used a considerably larger powder charge, as heavy as the weight of the ball according to Jorge Vigon, Historia de la Artilleria EspaƱola (Madrid, 1947), Vol. I, p. 236.