XM193 product is first run, first quality product manufactured at
Lake City Army Ammunition Plant for Federal Cartridge and is made to
Federal specifications typical for commercial ammunition. Ammo is
packed loose in the case, not in boxes.
SPECIFICATIONS:
PACKAGING: 20 Rounds Per Box w/ perforated top, 25 Boxes Per Case
CALIBER: 5.56 mm, manufactured at the Lake City Army Ammunition Plant (LCAAP)
CASE: Brass (Copper Alloy No. 260)
BULLET: 55 gr. FMJ Boat-Tail
PRIMER: M41 Operating Range: (-40 degrees to +125 degrees F)
PRIMER SEALANT: Water resistant lacquer
CASE MOUTH SEALANT: Yes
CASE KNURL: No
HEADSTAMP: Each loaded cartridge shall be headstamped with the manufacturer's symbol and year of manufacture
ACCURACY: 3-10round groups not to exceed 2.00" mean radius maximum average at 200 yards
INSTRUMENTAL VELOCITY: 3165 +/- 40 FPS (78 feet from muzzle) using a 5.56 test barrel, 20" long
ENERGY: 1223 Ft-Lbs. at 78’
CHAMBER PRESSURE: Piezotronic maximum average per 10 rounds - 55000 PSI in 5.56 test barrel (case mouth location)
BULLET PULL: Minimum individual 35 lbs.
PROPELLANT DETECTION: 100% mechanical/electronic detection of propellant levels within the cartridge
VISUAL INSPECTION: 100% visual inspection of finished cartridges prior to packaging
WARNING: For use in standard 5.56 mm chambers. Do not use in non-standard 5.56 chambers.
Ballistics Table:
| Range (yards) |
Remaining Velocity (feet/sec) |
Remaining Energy (lb-feet) |
Time of Flight (seconds) |
Drop (inches) |
Mid-Range Trajectory (inches) |
Trajectory (inches) |
Deflection 10-mph Wind (inches) |
| Muzzle |
3,290 |
1,322 |
0.0000 |
0.00 |
0.0 |
-1.5 |
0.0 |
| 100 |
2,827 |
976 |
0.0984 |
1.79 |
0.5 |
1.4 |
1.3 |
| 200 |
2,409 |
709 |
0.2134 |
7.96 |
2.2 |
0.0 |
5.5 |
| 300 |
2,028 |
502 |
0.3491 |
20.19 |
5.9 |
-7.5 |
13.3 |
| 400 |
1,686 |
347 |
0.5115 |
40.98 |
12.5 |
-23.6 |
25.8 |
| 500 |
1,394 |
237 |
0.7075 |
74.15 |
23.9 |
-52.0 |
44.3 |
| 600 |
1,170 |
167 |
0.9433 |
125.37 |
42.5 |
-98.5 |
69.7 |
| 700 |
1,029 |
129 |
1.2180 |
201.96 |
71.7 |
-170.3 |
102.0 |
| 800 |
939 |
108 |
1.5238 |
311.26 |
114.7 |
-274.9 |
139.8 |
| 900 |
872 |
93 |
1.8558 |
460.00 |
174.3 |
-418.9 |
182.2 |
| 1000 |
815 |
81 |
2.2121 |
654.59 |
253.1 |
-608.8 |
228.9 |
While, .223 and 5.56 x 45 ammo are interchangeable, the 5.56 may be
loaded at higher pressures than .223. SAAMI warns not to use 5.56 ammo
in sporter 223 rifles
SAAMI points out that chambers for military rifles have a different
throat configuration than chambers for sporting firearms which, together
with the full metal jacket of the military projectile, may account for
the higher pressures which result when military ammunition is fired in a
sporting chamber.
SAAMI recommends that a firearm be fired only with the cartridge for
which it is specifically chambered by the manufacturer. The .223
Remington is rated for a maximum of 50,000 CUP while the 5.56mm is rated
for 60,000 CUP. That extra 10,000 CUP is likely sufficient to cause a
failure in a chamber that's only rated for the "sporting" .223
Remington.
