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The cylindro-conoidal bullet is a type of muzzleloading firearm projectile with a convexly cone-like front end ("nose") and a cylindrical rear body, invented by Captain John Norton of the British 34th Regiment in 1832. It had a cavitied base, so when fired, the thin concavity wall ("skirt") would expand outwards and seal up the bore diameter.
The Tamisier grooves greatly improved the efficiency of the cylindro-conical bullet. However they rendered the forcing of the bullet against the grooves of the rifle bore in the Delvigne system rather difficult. To accommodate this difficulty, the stem rifle was developed by Thouvenin. [2]
Drawings of various types of semiwadcutter bullets 4-cavity Keith semiwadcutter bullet mold, the Lyman 358429. The semiwadcutter design consists of a roughly conical shape with the tip truncated flat (called a meplat), sitting on a cylinder (A at right). The base of the cone is slightly smaller in diameter than the cylinder, leaving a sharp ...
Henri-Gustave Delvigne (April 10, 1800 in Hamburg – October 18, 1876 in Toulon) was a French soldier and inventor.He became a captain in the French infantry service, from which he resigned on the outbreak of the 1830 July Revolution.
The Minié ball is a cylindro-conoidal bullet with grease-filled cannelures on its exterior and a cone-shaped hollow in its base.Minié designed the bullet with a small iron plug, and lead skirting that would expand under the pressure of gunpowder deflagration causing the bullet to obturate, and grip the rifling grooves.
The Nessler ball, or balle Nessler, is a type of muzzle-loading musket bullet. It was developed to increase the accuracy and range of smoothbore muskets and was used in the Crimean War. [1] It featured a short conical-cylindrical soft lead bullet, with a conical hollow in its base. [2] The bullet was designed with a lead skirting.
Johnson’s claim comes after another CBS News program, “60 Minutes,” was accused of editing an interview with Harris that aired Oct. 8 to cast her in a more favorable light.
An open single-cavity bullet mold and a closed two-cavity mold. A cast bullet is made by allowing molten metal to solidify in a mold.Most cast bullets are made of lead alloyed with tin and antimony; but zinc alloys have been used when lead is scarce, and may be used again in response to concerns about lead toxicity.