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The 6.5×25mm CBJ is a pistol cartridge designed for the CBJ-MS personal defence weapon. Capable of use in rebarreled 9 mm Parabellum firearms, the primary loading of the round fires a sabotted 4 mm tungsten sub-projectile. The 6.5×25mm CBJ has the same functional dimensions as the 9×19 Parabellum and was designed to produce the same recoil and pressures to allow most 9mm weapons to be converted to 6.5×25mm CBJ with a simple barrel change. Because the 6.5×25mm CBJ has the same overall dimensions as the 9×19 Parabellum, it can be used in 9 mm magazines. The standard ball round fires a saboted tungsten 4.0 mm diameter sub-projectile, weighing with the sabot. It has a muzzle velocity of from a barrel with a muzzle energy of . From a barrel, it has a muzzle velocity of with a muzzle energy of , and has good armor penetration out to 400 meters. The standard saboted tungsten ball round can pierce 9 mm of armor plate and leave a 6 mm diameter entry hole when fired from a 300 mm length barrel. By comparison, 5.56 NATO and 7.62 NATO rounds cause little or no penetration to armor of that thickness. From a 300 mm barrel, the tungsten saboted round has the same trajectory as a 5.56 NATO from an M4 carbine and a velocity of at , which will penetrate CRISAT armor. 6.5×25mm CBJ rounds are faster and heavier than both 5.7×28mm and 4.6×30mm.〔(Where Next For PDWs? by Anthony G Williams )〕〔(Brugger & Thomet’s MP9 in 6.5×25 CBJ ) - SAdefensejournal.com, 14 October 2011〕 There are several other 6.5×25mm CBJ bullets other than the sabot in full-caliber. Military rounds include a "spoon-tip" loading that increases the chance of the bullet to yaw on impact, and a cheap training version with a different core material. Police rounds include a high energy transfer round that can penetrate CRISAT armor at up to 50 meters, and a frangible round for training and situations for minimal barrier penetration. A subsonic armor piercing round weighs for use with a suppressor.〔 ==See also== *List of cartridges by caliber *List of rifle cartridges *5.7×28mm *4.6×30mm *6 mm caliber 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「6.5×25mm CBJ」の詳細全文を読む スポンサード リンク
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