Annual Report of the Secretary of War, Volume 3

18-inch twist 3-grooved 4555 Springfield 458 Frankford 80 Hazard angle Appendix Arsenal axis axle Bastard blank cartridges bore brass breech breech-loading rifle Bullet tin burst on striking carriage cartridges center of impact chambered rifle Chief of Ordnance chisel Dead-smooth deviation from center diameter distance Du Pont's edges elastic limit elevation feet firing Frankford Arsenal frustum Gatling gun gauge grooves Half-round Hand Smooth Hotchkiss inch in length inch of section iron July 16 June June 22 lime long-chamber long-range machine Mean deviation muzzle National Armory Number Open service Peep and globe Permanent set Plate Pont's pounds powder projectile range rasp rear restoration round Sandy Hook screw Second cut Sept Sharps shot showing the extension Skew-cut solid-head shell Specific gravity SPECIMEN Spring square inch steel straps Successive exten Successive restora tang taper target teeth tion trunnions tube Weight West Point foundry wind yards