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Posted: 3/3/2010 9:13:11 PM EDT
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Today I picked up some sealed wooden crate ammo from a friend an Im not sure what I have-
#1- Two 50 cal cans in a wooden crate. 600 rounds per can in green bandoliers with 10 rounds per pouch in a black plastic strippe clip guide(pretty slick and they work!). Side of the cans are marked A059 Ball C77 I can't make out the letters on the brass but it looks like IAI and a cross. #2 This ammo is in a big heavy card board box- 30 rounds per open top box - each 10 rounds on a plastic stripper clip and these came with a small stripper clip guide. Brass is marked LC 09. What gr is this stuff? Any good? All the ammo is super clean and shiny. Stored in a storage vacility. Thanks |
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I found this on google...
C-77 Ball C-77 ball projectiles deliver outstanding accuracy. The average standard deviation measured at 550 m (600 yd.) is approximately 50% lower than maximum permissible NATO limits for that distance. Accuracy maintained over the production of 60 million rounds is shown in Figure 4. The hardness of the steel penetrator and the assembly of the projectile components are such that 100% penetration is obtained under the conditions shown in Table 1. Thickness Distance of target from the gun mm in. m yd. NATO 1020 steel plate (55/70 RB) 3.5 0.14 570 623 Structural steel plate (80 RB) 3 0.12 700 766 Structural steel plate (80 RB) 5 0.20 400 437 2219 aluminum alloy armour plate 12.5 0.50 400 437 2219 aluminum alloy armour plate 19 0.75 300 328 Note that penetration capability decreases at temperatures below -10ºC (14ºF) Table 1: 100% penetration into various targets Residual velocity and kinetic energy, as a function of the distance from the muzzle of the gun, are presented in Figure 5. Maximum chamber pressure is maintained well below maximum permissible NATO limits [380 MPa (55,100 psi)], (see Figure 6) ensuring that the ammunition is safe to use and functions properly in all weapons. Moreover, the propellant is selected to keep the flame temperature as low as possible. The combination of these two factors accounts for the fact that barrel wear and erosion problems have never been experienced by any customer. |
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A059 is the DODIC for M855 on 10-round stripper clips. If it's marked "C77" that means it's Canadian, which goes along with the IVI headstamp (I'll bet you misread it).
The stuff in #2 sounds like the Stateside distribution packaging for standard ammo-which would also mean that it's M855 |
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"Penetrator" in reference to the M855 round is a misnomer. It's actually a mild steel insert that moves the center of gravity of the bullet farther back, ensuring longer point-forward flight. The design criteria for the M855 bullet was to penetrate a "standard NATO steel helmet" at 600m, which M193 can do sometimes, but since the lighter bullet can yaw a lot before it gets to 600m, it's seldom point-forward so it doesn't always go through helmet steel. By keeping the M855 bullet point-forward, the insert allows it to penetrate this type of steel consistently.
M855 is anything but "armor piercing," and is specifically listed by the ATF as NOT AP. "Penetrator" usually goes with armor piercing terminology. |
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