6.5×25mm CBJ
6.5×25mm CBJ | |
---|---|
Place of origin | Sweden |
Production history | |
Manufacturer | CBJ Tech AB |
Variants | CBJ CBJ ST (spoon tip) CBJ HET (high energy transfer) CBJ subsonic AP CBJ TRP (training reduced penetration) CBJ frangible CBJ Blank CBJ drill[1] |
Specifications | |
Parent case | 9×19mm Parabellum[2] |
Case type | Rimless, bottleneck |
Bullet diameter | 0.157 in (4.0 mm) |
Overall length | 1.169 in (29.7 mm) |
Primer type | Large pistol |
The 6.5×25mm CBJ is a pistol cartridge designed for the CBJ-MS personal defence weapon.
Description
The 6.5×25mm CBJ has the same functional dimensions as the 9×19mm Parabellum and was designed to produce the same recoil and pressures to allow most 9 mm weapons to be converted to 6.5×25mm CBJ with a simple barrel change. Also, because the 6.5×25mm CBJ has the same overall dimensions as the 9×19mm Parabellum, it can be used in 9 mm magazines. The primary loading of the standard ball round fires a saboted tungsten 2 g (31 gr) 4.0 mm diameter sub-projectile, weighing 2.5 g (39 gr) with the sabot. It has a muzzle velocity of 730 m/s (2,400 ft/s) from a 120 mm (4.7 in) barrel with a muzzle energy of 533 J (393 ft⋅lb). From a 300 mm (12 in) barrel, it has a muzzle velocity of 900 m/s (3,000 ft/s) with a muzzle energy of 810 J (600 ft⋅lb), 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. From a 300 mm barrel, the tungsten saboted round will penetrate CRISAT armor.
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 2.5 g (39 gr) high-energy-transfer round that can penetrate CRISAT armor at up to 50 meters, and a frangible round for training and situations requiring minimal barrier penetration. A subsonic armor-piercing round weighs 8 g (120 gr) for use with a suppressor.[3]
See also
References
- ^ Cartridge Information retrieved 24 November 2009
- ^ thefirearmblog.com - The amazing 6.5x25mm CBJ
- ^ Brugger & Thomet’s MP9 in 6.5×25 CBJ - SAdefensejournal.com, 14 October 2011
External links
This article needs additional citations for verification. (October 2007) |