M24 Sniper Weapon System - Match-Grade Ammunition

Match-Grade Ammunition

• 7.62 × 51mm M118 Match Grade: A 173-grain round.
• 7.62 × 51mm M118LR Long Range: A 175-grain round using Sierra MatchKing Hollow Point Boat Tail projectiles.
  • 7.62mm M118 Long Range Performance Data:
  • Muzzle velocity (nominal): 2,580 f/s (786 m/s)
  • Chamber pressure (typical): 52,000 psi (358.6 MPa)
  • Action time (max): 4 ms
  • Average horizontal spread at 1,000 meters: 10.3 in (0.984 MOA)
  • Average vertical spread at 1,000 meters: 14 in (1.337 MOA)

According to JBM Ballistics, using the G7 ballistic coefficient provided by Bryan Litz, the 7.62mm M118 Long Range 7.62×51mm NATO cartridge, when fired at its nominal muzzle velocity of 786 m/s (2,580 ft/s), should have approximately 878 m (960 yd) supersonic range under International Standard Atmosphere conditions at sea level (air density ρ = 1.225 kg/m3).

• 7.62 × 51mm MK 316 MOD 0 Special Ball, Long Range: A 175-grain round consisting of Sierra MatchKing Hollow Point Boat Tail projectiles, Federal Cartridge Company match cartridge cases and Gold Medal Match primers and an undisclosed modified extruded propellant. The 7.62 × 51mm MK 316 MOD 0 Special Ball, Long Range cartridges have an accuracy requirement based around 10-round shotgroups. The Propellant has been verified as IMR 4064 (per NSN 1305-01-567-6944 and Federal Cartridge Company Contract/Order Number N0016408DJN28 and has a charge weight per the specs of 41.745 grains).
  • The average extreme spread for 10-round shotgroups shall be less than or equal to the following values:
  • 600 yd: 7.0 in (first Production Lot). This equates to a ≤ 1.1 MOA requirement at 548.6 m.
  • 300 yd: 3.5 in (after first Production Lot). This equates to a ≤ 1.1 MOA requirement at 274.3 m.

The maximum muzzle velocity standard deviation is set at 15 ft/s (4.57 m/s). Information published on acceptance tests regarding five MK 316 MOD 0 cartridge production lots indicated a sub 2.4 in at 300 yd performance. This equates to a sub 0.8 MOA performance at 274.3 m for the listed ammunition lots.