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Statements

Subject Item
dbr:.22_Spitfire
rdf:type
yago:Instrumentality103575240 yago:Weaponry104566257 yago:Whole100003553 yago:PhysicalEntity100001930 yago:Ammunition102703275 yago:Object100002684 yago:Artifact100021939 yago:Cartridge102971691
rdfs:label
.22 Spitfire .22 Spitfire
rdfs:comment
O .22 Spitfire (também conhecido como 5,7 mm Johnson ou MMJ 5,7 mm Johnson) é um cartucho de rifle americano, projetado por , da , para a conversão da carabina M1, este wildcat foi introduzido em 1963. Era baseado no .30 Carbine, com a boca reduzida para 0,22 polegadas (5,59 milímetros) para aceitar projéteis .224. É adequado para a caça de coelhos, coiotes ou outros espécimes de pequeno porte, e tem potencial como cartucho militar. The .22 Spitfire (Originally the Johnson MMJ 5.7mm Spitfire, also known as 5.7mm Johnson or 5.7mm MMJ) is an American wildcat rifle cartridge developed by Melvin Johnson. In 1963, firearms designer Melvin Johnson developed a conversion of the M1 Carbine to the Johnson MMJ 5.7mm Spitfire Cartridge, The cartridge is based on the .30 Carbine cartridge, necked-down to .224 (5.7 mm) caliber. Originally designed with a 1-in-14 twist barrel, the 40 grain .22 Hornet bullet was the standard load. It could also be loaded with lighter or heavier weight bullets available at that time for the .22 Hornet as well as most bullet weights up to 50 grains such as that used by the .222 Remington (5.7×43mm).
dbp:name
0.22
foaf:depiction
n8:5.7mm_Johnson_Spitfire.jpg
dcterms:subject
dbc:Wildcat_cartridges dbc:Paramilitary_cartridges dbc:Pistol_and_rifle_cartridges
dbo:wikiPageID
18485593
dbo:wikiPageRevisionID
1074621453
dbo:wikiPageWikiLink
dbr:List_of_rifle_cartridges dbr:List_of_cartridges_by_caliber dbc:Wildcat_cartridges dbr:.224_Boz dbr:M1_Carbine dbr:FN_5.7×28mm dbr:.221_Remington_Fireball dbr:.222_Remington dbr:5.56×45mm_NATO dbr:.22_TCM dbr:5.7x28mm_FN dbr:Melvin_Johnson dbr:5_mm_caliber dbr:.22_Hornet dbc:Paramilitary_cartridges dbr:Rifle dbr:Wildcat_cartridge dbr:5.7×28mm dbr:Cartridge_(firearms) dbr:.30_Carbine dbr:M1_carbine dbr:Johnson_Guns_Inc. dbc:Pistol_and_rifle_cartridges
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dbo:thumbnail
n8:5.7mm_Johnson_Spitfire.jpg?width=300
dbp:balsrc
Barnes & Amber
dbp:base
0.353
dbp:bullet
0.224
dbp:bw
40 50
dbp:caption
0.22
dbp:caseLength
1.29
dbp:caseType
rimless bottleneck
dbp:designDate
1963
dbp:designer
dbr:Melvin_Johnson
dbp:en
810 720 795
dbp:imageSize
300
dbp:length
1.65
dbp:manufacturer
dbr:Johnson_Guns_Inc.
dbp:neck
0.253
dbp:origin
USA
dbp:parent
0.3
dbp:primer
Boxer small rifle
dbp:rifling
74.0
dbp:rimDia
0.356
dbp:shoulder
0.332
dbp:type
Rifle
dbp:vel
2700 2850 3000
dbo:abstract
O .22 Spitfire (também conhecido como 5,7 mm Johnson ou MMJ 5,7 mm Johnson) é um cartucho de rifle americano, projetado por , da , para a conversão da carabina M1, este wildcat foi introduzido em 1963. Era baseado no .30 Carbine, com a boca reduzida para 0,22 polegadas (5,59 milímetros) para aceitar projéteis .224. É adequado para a caça de coelhos, coiotes ou outros espécimes de pequeno porte, e tem potencial como cartucho militar. The .22 Spitfire (Originally the Johnson MMJ 5.7mm Spitfire, also known as 5.7mm Johnson or 5.7mm MMJ) is an American wildcat rifle cartridge developed by Melvin Johnson. In 1963, firearms designer Melvin Johnson developed a conversion of the M1 Carbine to the Johnson MMJ 5.7mm Spitfire Cartridge, The cartridge is based on the .30 Carbine cartridge, necked-down to .224 (5.7 mm) caliber. Originally designed with a 1-in-14 twist barrel, the 40 grain .22 Hornet bullet was the standard load. It could also be loaded with lighter or heavier weight bullets available at that time for the .22 Hornet as well as most bullet weights up to 50 grains such as that used by the .222 Remington (5.7×43mm). The conversion is essentially a .22 caliber (5mm) barrel fitted to an M1 Carbine receiver with an appropriate feed ramp for the caliber brazed or welded into the receiver. Some commercial production M1 Carbines were originally manufactured in this caliber with the feed ramp for the .22 Spitfire integral to the barrel. The specifications tend to land the cartridge about halfway between the 5.56×45mm NATO and the more recent 5.7x28mm FN. Ballistically it is very similar to the rimmed .22 Hornet, but fashioned in a rimless cartridge design appropriate for a self-loading carbine with very light recoil. The Spitfire M1 Carbine originally was advertised as firing a 40-grain (2.6g) bullet with a muzzle velocity of 3050 ft/s (930 m/s), though handloaders with careful selection of modern powders and appropriate bullets consistently safely exceed those numbers while remaining within the M1 Carbine's Maximum Pressure rating of 38,500 psi (265 MPa). In comparison, the "standard" load for the .30 Carbine has a .30 Carbine ball bullet weighing 110 grains (7.1 g); a complete loaded round weighs 195 grains (12.6 g) and has a muzzle velocity of 1,990 ft/s (610 m/s), giving it 967 ft⋅lbf (1,311 joules) of energy when fired from the M1 carbine's 18-inch barrel. Johnson advertised the smaller caliber and the modified carbine as a survival rifle for use in jungles or other remote areas. It was light, and easily carried ammunition in a light, fast handling carbine with low recoil.
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wikipedia-en:.22_Spitfire?oldid=1074621453&ns=0
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6051
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