Perfect for any AR-15 Rifles, Federal XM193 ammunition features a non-magnetic FMJ Bullet
Federal American Eagle 5.56mm NATO Ammo 55 Grain Full Metal Jacket 1000 Rounds Bulk review offers the following information; Federal American Eagle Ammunition has been loaded and passed true NATO specifications. This is the same ammunition that is currently being used by the US Military and met their strict quality assurance standards and specifications. This Federal American Eagle 5.56mm M193 NATO ammunition is the perfect example of superiority that goes into making Federal ammo with its re-loadable brass casing and finely designed boxer primers.
Like any Federal products, the XM193 product is brand new, original, first quality product manufactured at Lake City Army Ammunition Plant for Federal Cartridge and is made to Federal specifications typical for commercial ammunition. Shooters can have ease of mind knowing that all XM193 products are the same product, made to the same specifications, regardless of the sku or part number. (ie. XM193C is the same as XM193F, XM193CBP and etc…) the only difference is the package configuration. This is an added bonus for hunters and shooters that have calibrated firearms to match specific ammunition.
The 5.56mm ammo features brand new virgin never fired annealed brass casings, a lead core full metal jacket bullet which is not magnetic, and a non-corrosive primer. This Federal 5.56mm ammo can be reloaded up to 7 times for those shooters that reload their 5.56mm NATO ammunition. Federal XM193 5.56mm delivers a muzzle velocity of 3240 feet per second and muzzle energy of 1282 ft. lbs.
Proudly made by Federal Lake City Arsenal Ammunition Plant in the USA
|Caliber||223 REMINGTON/5.56X45MM AMMO|
|Bullet Type||FMJ-Full Metal Jacket|
|Muzzle Velocity||3240 fps|
|Muzzle Energy||1282 ft. lbs|
|Ammo Rating||Target & Practice 5.56mm NATO Ammo|
The 5.56×45mm NATO (official NATO nomenclature 5.56 NATO, fyv-FYV-six) is a rimless bottlenecked intermediate cartridge family developed in the late 1970s in Belgium by FN Herstal. It consists of the SS109, SS110, and SS111 cartridges. On 28 October 1980 under STANAG 4172 it was standardized as the second standard service rifle cartridge for NATO forces as well as many non-NATO countries. Though they are not entirely identical, the 5.56×45mm NATO cartridge family was derived from and is dimensionally similar to the .223 Remington cartridge designed by Remington Arms in the early 1960s.
The 5.56×45mm NATO SS109/M855 cartridge (NATO: SS109; U.S.: M855) with standard 62 gr. lead core bullets with steel penetrator will penetrate about 38 to 51 cm (15 to 20 in) into soft tissue in ideal circumstances. As with all spitzer shaped projectiles, it is prone to yaw in soft tissue. However, at impact velocities above roughly 762 m/s (2,500 ft/s), it may yaw and then fragment at the cannelure (the crimping groove around the cylinder of the bullet). These fragments can disperse through flesh and bone, inflicting additional internal injuries.
Fragmentation, if and when it occurs, imparts much greater damage to human tissue than bullet dimensions and velocities would suggest. This fragmentation effect is highly dependent on velocity, and therefore barrel length: short-barreled carbines generate less muzzle velocity and therefore lose wounding effectiveness at much shorter ranges than longer-barreled rifles.
Proponents of the hydrostatic shock theory contend that the shockwave from a high-velocity bullet results in wounding effects beyond the tissue directly crushed and torn by the bullet and fragments. However, others argue that tissue damage from hydrostatic shock is a myth. Critics argue that sonic pressure waves do not cause tissue disruption and that temporary cavity formation is the actual cause of tissue disruption mistakenly attributed to sonic pressure waves.
SS109/M855 NATO ball can penetrate up to 3 mm (0.12 in) of steel at 600 meters. According to Nammo, a Finnish-Norwegian ammunition producer, the 5.56×45mm NATO M995 armour piercing cartridge can penetrate up to 12 mm (0.47 in) of RHA steel at 100 meters.
The Swedish military has measured the bullet velocities of SS109/M855 military cartridges at 4 m (13.1 ft) from the muzzle fired from differing barrel lengths.
|Barrel length||SS109/M855 V4 bullet velocity||V4 velocity loss|
|210 mm (8.3 in)||723 m/s (2,372 ft/s)||41 m/s (135 ft/s)|
|240 mm (9.4 in)||764 m/s (2,507 ft/s)||32 m/s (105 ft/s)|
|270 mm (10.6 in)||796 m/s (2,612 ft/s)||29 m/s (95 ft/s)|
|300 mm (11.8 in)||825 m/s (2,707 ft/s)||18 m/s (59 ft/s)|
|330 mm (13.0 in)||843 m/s (2,766 ft/s)||23 m/s (75 ft/s)|
|360 mm (14.2 in)||866 m/s (2,841 ft/s)||12 m/s (39 ft/s)|
|390 mm (15.4 in)||878 m/s (2,881 ft/s)||14 m/s (46 ft/s)|
|420 mm (16.5 in)||892 m/s (2,927 ft/s)||14 m/s (46 ft/s)|
|450 mm (17.7 in)||906 m/s (2,972 ft/s)||9 m/s (30 ft/s)|
|480 mm (18.9 in)||915 m/s (3,002 ft/s)||7 m/s (23 ft/s)|
|508 mm (20.0 in)||922 m/s (3,025 ft/s)||–|
According to STANAG 4172 and the official NATO proofing guidelines the 5.56×45mm NATO case can handle up to 420.0 MPa (60,916 psi) piezo service pressure. In NATO regulated organizations every rifle cartridge combination has to be proofed at 537.5 MPa (77,958 psi) to certify for service issue.
STANAG 4172 defines the Belgian ball cartridge SS109 as the NATO reference cartridge and adds a considerable number of technical requirements like a minimum pressure of 88.0 MPa (12,763 psi) at the gas port 280 millimetres (11.0 in) down the 508 millimetres (20.0 in) long standard proof barrel and primer sensitivity that are not defined by civilian C.I.P. and SAAMI ammunition rulings and recommendations.
The NATO military alliance uses a NATO-specific recognized class of procedures to control the safety and quality of firearms ammunition called NATO EPVAT testing. The civilian organisations C.I.P. and SAAMI use less comprehensive test procedures than NATO. The NATO Manual of Proof and Inspection AC/225 (LG/3-SG/1) D/8 stipulates each weapon and component considered vulnerable to the effects of a rapid change in pressure, for example barrels, breech blocks and bolts,
will be tested by firing one dry round at a corrected minimum of 25% over pressure and one oiled round at a corrected minimum of 25% over pressure. Over pressure of 25% means 25% in excess of the service pressure resulting for the 5.56×45mm NATO up to 430.0 MPa (62,366 psi) (Pmax) piezo service pressure.
The service pressure is defined as the mean pressure generated by the service cartridge at a temperature of 21 °C (70 °F). Such a high pressure proof is conducted with both the weapon and ammunition conditioned to an ambient temperature of 21 °C (70 °F).
Each weapon will be individually tested, from an ammunition lot that produces a minimum corrected mean chamber pressure. The corrected proof pressure requirement (service pressure (Pmax) + 25%) for the 5.56×45mm NATO like the STANAG 4172 is 537.3 MPa (77,929 psi) (PE) piezo pressure. This pressure has to be recorded in a NATO-design EPVAT barrel with Kistler 6215 transducer, HPI GP6 Transducer or by equipment to C.I.P. requirements.
- “brochure on 5.56mm F1 ball ammunition to NATO STANAG 4172” (PDF). ADI Thales. Archived from the original (PDF) on 21 July 2008.
- DIRECT FIRE AMMUNITION Handbook 2019, Project Manager Maneuver Ammunition Systems