| 词条 | .348 Winchester |
| 释义 |
| name = .348 Winchester | image = 348 Winchester.JPG | image_size = 300px | caption = .348 Winchester | origin = USA | type = Rifle | service = | used_by = | wars = | designer = Winchester | design_date = | manufacturer = | production_date = | number = | variants = | is_SI_specs = | parent = .50-110 WCF | case type = rimmed bottleneck | bullet = .348 | neck = .3785 | shoulder = .485 | base = .553 | rim_dia = .610 | rim_thick = .070 | case_length = 2.255 | length = 2.795 | rifling = 1 in 12 | primer = Large rifle | is_SI_ballistics = | bw1 = 150 | btype1 = | vel1 = 2890 | en1 = 2780 | bw2 = 200 | btype2 = | vel2 = 2530 | en2 = 2840 | bw3 = 250 | btype3 = 200 | vel3 = 2350 | en3 = 3060 | bw4 = 200 gr FTX | btype4 = | vel4 = 2630 | en4 = 3072 | bw5 = | btype5 = | vel5 = | en5 = | test_barrel_length = 24 | balsrc = }} The .348 Winchester is an American rifle cartridge. It was introduced in 1936, and developed for the Winchester Model 71 lever action rifle. The .348 was one of the most powerful rimmed rounds ever used in a lever action rifle.[1] PerformanceIt is excellent for any North American big game in woods or brush, if the 250 grain bullet is used, but not especially suited to long range (400 yards and beyond) as a result of the need to use flat-nose slugs due to the Model 71's tubular magazine. Until Hornady's FTX flex tip pointed bullets, 300 yards with a good peep sight is a fairly easy shot (Factory-loaded, midrange trajectory at {{convert|200|yards}} is {{convert|2.9|in|cm|abbr=on}} for the {{convert|150|gr|sing=on}} bullet, {{convert|3.6|in|cm|abbr=on}} for the {{convert|200|gr|g|sing=on}} round, and {{convert|4.4|in|cm|abbr=on}} for the {{convert|250|gr|g|sing=on}} slug.) The {{convert|200|and|250|gr|g|sing=on}} loadings are preferred for anything past {{convert|100|yards|abbr=on}}. In 1962, Winchester dropped the factory 150 gr and 250 gr loads, retaining only the 200 gr. No other rifle was ever offered in .348 by Winchester (although Uberti has made some 400 rifles chambered for the .348 in the Cimarron 1885 Hi-Wall in 2005-06), and it has been supplanted by the .358 Winchester (in the Model 88). (The Model 71 was discontinued in 1958.) In 1987 Browning produced a modern version of the Model 71 in Japan.{{cn|date=July 2012}} These have different thread sizes in places, most notably the barrels, and many parts will not interchange with the originals. The Browning version was a limited production model only.{{cn|date=July 2012}} The case of the .348 is used to produce the 8-348w wildcat, used to rechamber World War 1-era rifles such as Lebel or Berthier, instead of the original 8x50mmR, still considered war materiel in France and therefore strictly regulated.{{cn|date=July 2012}} The .348 is also the basis for the .348 Ackley Improved, The .348 Ackley improved has about a 200 fps advantage over the standard pushing the 200 grain FTX bullet at 2800 feet a second with some of the new hybrid powders. The .348 also served as the basis for the .50 Alaskan and .500 Linebaugh cartridges.[2][3] See also
References1. ^Barnes, Frank C., ed. by John T. Amber. "Cartridges of the World". Northfield, IL: DBI Books, 1972. pg 52 {{Winchester Cartridges Firearms}}{{DEFAULTSORT:348 Winchester}}{{ammo-stub}}2. ^Barnes, Frank C., ed. by W. Todd Woodard. "Cartridges of the World 14th Edition". Iola, WI: Gun Digest® Books, 2014. pg 412 3. ^http://www.b-mriflesandcartridges.com/upload/50BMAK%20by%20Layne%20Simpson.pdf 1 : Pistol and rifle cartridges |
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