The rifle muskots in our regular army nayu their grooves with a twist of onc turn in six feet, and deercasing in depth from breeoh to uiuzzlo. This makes the cartridge a little stiff to leave the nmzzlc, but theshoot;ug is more aeourate on this account. The ball has three grooves around the cylindrical part. and the wedge or capsule isused insido. The wèight of the ball is 710 grains, the charge of powdc-r is 70 grains. The barrel of the rifle musket is 40 iuches long, and entira vnth bayonet, 78 inches. The army riflo (not the rifle musket) is 33 inpbep long ; with bayonet the weapon is 71 niches loug.- Tlio total weight of tlie riüe musket is 9 pounds. The United States rifles are fired with patches ;J Htniwben-ied aio íjclling in Mobile at 25 cents ;i wxc..