Westley Richard’s, Breech Loader. Bore octagonal form. Rifling one turn in 20 inches. Regulation Minie Rifle, Muzzle Loader. Rifling one turn in 6 feet 6 inches. _American Guns._—The Peabody-Martini Rifle, Breech Loader. Rifling 7 grooves, one turn in 22 inches, gain twist, lands and grooves of equal width. Maynard Rifle, Breech Loader. Rifling 3 grooves, one turn in 5 feet, lands and grooves equal width; depth, .01. Sharp’s Rifle, Breech Loader. Lands and grooves equal width. Rifling one turn in 20 inches. Bown & Sons’ Kentucky Rifle, Muzzle Loader. Standard number of grooves 7, but made with 4, 5, 6, and 7 grooves, same width as lands. Even twist one turn in 42 inches. Gain twist commences at 9 feet and ends at 6 feet. Powel & Son’s Breech Loading Rifle, 6 and 7 grooves, one turn in 36 inches. Steven’s Rifle, Breech Loader. Regular twist, one turn in 26 inches. Springfield, U. S. Rifle, Breech Loader, Cal. 45. Rifling 3 plain concentric grooves. Lands and grooves equal width. Uniform twist, one turn in 22 inches, depth .005. Frank Wesson’s Rifle, Breech Loader. Long and mid-range guns using long slugs, even twist, one turn in 18 inches, grooves 6, lands and grooves equal width. Short range guns, using slugs having short bearing, increase twist commencing on 6 feet, and ending on 2 feet, 5 and 6 grooves, lands and grooves of equal width. Wesson’s Muzzle Loading Rifle. Barrel 2′ 8″ long. Rifling one turn in 3′ 6″ 6 grooves; space between grooves equal to interior surface presenting a dovetail appearance. Groves not so wide as spaces. The Whitney Arms Co.’s Guns, Breech Loading, comprising the Whitney, Kennedy, and Phœnix systems. Rifling 6 grooves, one turn in 22 inches. Lands and grooves of equal width. Marston’s Rifle (Toronto, Canada), Muzzle Loader, number of grooves 6, lands and grooves equal width; regular twist, one turn in 30 inches; depth of groove 15-thousandths inch, slightly freed at breech. _Pistols._—Colt’s Army Pistol, Breech Loading Revolver, Cal. 45. Rifling 6 grooves, twist uniform, one turn in 16 inches; depth .005. Schofield, Smith & Wesson Revolver for Army Use, Breech Loader. Bore, .435. Number of grooves 5, uniform twist, one turn in 20 inches. Depth of rifling .0075. CHAPTER XLII. DIRECTIONS FOR TAKING APART AND ASSEMBLING RIFLES, DOUBLE-BARRELLED SHOT GUNS AND PISTOLS, OF THE MOST NOTED MAKERS IN THE UNITED STATES. _The Ballard Rifle.—(Made by the Marlin Arms Co., New Haven, Conn.)_ _To Take Apart._—1, take the sight from the barrel; 2, take off the stock by unscrewing butt-plate; and turning out the long tang screw; 3, drop the lever and take out lever screw; take out the extractor then the block; 4, unscrew the barrel from the frame and take the tang from the frame; 5, take the screws from the lock and pry the plates apart. _To Assemble._—Proceed in reverse order.