In the United States, in 1857, the Flobert cartridge inspired the .22 Short, specially conceived for the first American revolver using rimfire cartridges, the Smith & Wesson Model 1. A year before, in 1856, the LeMat revolver was the first American breech-loading firearm, but it used pinfire cartridges, not rimfire. Formerly, an employee of the Colt's Patent Firearms Manufacturing Company, Rollin White, had been the first in America to conceive the idea of having the revolver cylinder bored through to accept metallic cartridges (circa 1852), with the first in the world to use bored-through cylinders probably having been Lefaucheux in 1845, who invented a pepperbox-revolver loaded from the rear using bored-through cylinders.[45] Another possible claimant for the bored-through cylinder is a Frenchman by the name of Perrin, who allegedly produced in 1839 a pepperbox revolver with a bored-through cylinder to order. Other possible claimants include Devisme of France in 1834 or 1842 who claimed to have produced a breech-loading revolver in that period though his claim was later judged as lacking in evidence by French courts and Hertog & Devos and Malherbe & Rissack of Belgium who both filed patents for breech-loading revolvers in 1853.
After a week of playing with my write-up, talking with Rich Rains and others, and wondering what happened in 1928, it struck me – what if they started the half-year system in 1928, continuing the alphabet but now using two letters to a year and deleting the same letters the gun barrel guys did. It would look like….
Якщо поекспериментувати з декількома партнерами, що обереш?
So with that information nailed down I made a presentation of my findings at the seminars of the 2007 St. Louis International Cartridge Show (SLICS). It was well received, and the members requested that I write up my findings for the Journal. I agreed to do so.
M1O appears on the bottom of a box of .30-18 AUTOMATIC cartridges (a special run made for John Browning for an experimental carbine he had invented); I can’t remember who had translated this for me as July 1, 1921. Applying these two to the sequential-starting-with-A theory they meshed perfectly, revealing that at this time only one letter was used for a whole year: A=1909, B=1910, etc. Further research would reveal that the letters O and Q were not used, perhaps because they could be confused with 0 (zero). Starting in early 1923 (letter code P) the year code was applied to the left of the month code, for example, 20WP. This pattern is used until 1927 (letter code U) and then changes again to a system yet to be deduced.
The detonating cap thus invented and adopted brought about the invention of the modern cartridge case, and rendered possible the general adoption of the breech-loading principle for all varieties of rifles, shotguns, and pistols. This greatly streamlined the reloading procedure and paved the way for semi- and full-automatic firearms.[citation needed]
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Another clue came along – the Remington Society’s gun barrel dates of manufacture at . It started with 1921 and reconfirmed the BLACKPOWDERX month code. It also clarified that as time went on the letters I, Este, Q, and V would not be used as year codes.
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