| 词条 | .22 TCM |
| 释义 |
|name= 22TCM |image= TCM FN Rem.jpg |caption= From left: .22 TCM, FN 5.7×28mm, .223 Remington | image size=200px |origin= |type= Pistol/Rifle |service= |used_by= |wars= |designer= Fred Craig |design_date= |manufacturer= |production_date= |number= |variants= |is_SI_specs=0 |parent=5.56×45mm NATO |case_type=Rimless bottleneck |bullet=.224 or 5.56mm |neck= |shoulder= |base=0.376 |rim_dia=0.378 |rim_thick=0.045 |case_length=1.022 |length=1.265 |case_capacity=15.2 gr H20 |rifling= |primer= |max_pressure= |pressure_method= |max_pressure2= |pressure_method2= |max_pressure3= |pressure_method3= |max_cup= |filling= |filling_weight= |detonation= |yield= |is_SI_ballistics=no |bwunit=grain |bw1=40 |btype1=Pointed flat nose |vel1=2800 |en1=696 |bw2=40 |btype2=Pointed flat nose |vel2=2070 |en2=381 |bw3= |btype3= |vel3= |en3= |bw4= |btype4= |vel4= |en4= |bw5= |btype5= |vel5= |en5= |test_barrel_length=22.75" rifle (higher velocity) and 5.0" pistol (lower velocity) }} The .22 TCM or 22TCM (.22 Tuason Craig Micromagnum) is a proprietary bottle-necked cartridge created from a 5.56 NATO cartridge developed by custom gunsmith Fred Craig and Rock Island Armory (RIA) for semi-automatic pistols and the Rock Island M22 TCM bolt action rifle. Before the cartridge was commercialized, it was called the 22 Micro-Mag. Similar conceptually to other bottle-necked pistol cartridges such as the larger-caliber .357 SIG, the .22 TCM trades bullet mass for increased velocity and lowered recoil.[1] Based on the 5.56×45mm NATO case and shortened so that the shoulder is at approximately the same length as a .38 Super cartridge, the .22 TCM is somewhat longer than the ubiquitous 9×19mm Parabellum and designed to be fired from a RIA line of weapons (which also included 9mm barrel swaps) fed by Para-Ordnance-style double-column .38 Super magazines. A sub-variant, the 22 TCM 9R, with a shorter, more deeply-seated bullet, is designed for use in Glock magazines limited to standard-length 9mm cartridges. Standard factory loads are 40-grain jacketed soft hollow point, 39-grain for "9R". See also
References1. ^https://www.shootingillustrated.com/articles/2016/2/1/22-tcm/ {{222remderivatives}}{{DEFAULTSORT:22TCM}}{{ammo-stub}} 1 : Pistol and rifle cartridges |
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