◇ 5.56mm US ammo spec

發信人: ktsai.bbs@csie.nctu.edu.tw (麻州獵鹿人), 看板: Military
標  題: 5.56mm US  ammo spec
發信站: 交大資工鳳凰城資訊站 (Fri Aug 22 02:57:03 1997)
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Since we have a lot of discussion of 5.56NATO (actually has a diameter of
5.66mm or .223" :) performances, I thought that you guys may like to have 
some vital statistics about this military ammos.  Info taken from Cartridge
of the World, 8th edition.

<M193>
Weapon: Rifle, M16, XM16E1
MV: 3250fps +- 40fps
Pressure: 52000psi
Accuracy: 2" average at 200yd
Bullet Weight: 56gr +- 1gr

<M855A1>
Weapon: Rifle, M16A2, M249
MV: 3020fps +- 40fps
Pressure: 52000psi
Accuracy: 2" average at 200yd
Bullet Weight: 62gr +- 1gr

<Grenade, M195>
Weapon: Rifle, XM16E1, M16
MV: 140-165fps
Grenade Weight: 1.56lb

<Tracer, M196>
Weapon: Rifle, XM16E1, M16
MV: 3200fps +- 40fps
Pressure: 52000psi
Accuracy: 5" average at 200yd
Bullet Weight: 54gr +- 1gr

<Tracer, M856A1>
Weapon: Rifle, M16A2, M249
MV: 2795ps +- 40fps
Pressure: 52000psi
Accuracy: 5" average at 200yd
Bullet Weight: 63.8gr

<Test, High Pressure, M197>
Weapon: used to prove test barrel and weapon, not a service cartridge
Pressure: 70000psi Std. Dev. 3500psi
Bullet Weight: 56gr +- 1gr

<Dummy, M199>
Weapon: Rifle, XM16E1, M16, training, not a service cartridge
Bullet Weight: 56gr +- 1gr

<Dummy, M232>
Weapon: Rifle, XM16E1, M16, training, not a service cartridge
Bullet Weight: 56gr +- 1gr

<Dummy, M857>
Weapon: Rifle, M16A2, M249
Bullet Weight: 61gr +- 1gr

<Blank, XM200>
Weapon: Rifle, XM16E1, M16, with blank firing attachment (M13)
Screen Perferation: none to paper screen at 15ft
Cyclic Rate: 550rpm
Bullet: none, case mouth closed with 7 petal rose crimp