RFPAttach4B_GFI-Partial_ARDEC_Ballistics_Table_for_M16A4.docx

| FIRING TABLES AND BALLISTICS DIVISION |

| FIRE CONTROL INPUTS |

| FCI 5.56-M855, APPENDIX 1A |

| FIRING TABLES |

| FOR |

| CARBINE, 5.56MM, M4/A1 |

| AND |

| RIFLE, 5.56MM, M16A2/A3/A4 |

| AND |

| MACHINE GUN, 5.56MM, M249 |

| (STANDARD AND SHORT BARREL) |

| FIRING |

| CARTRIDGE, BALL, M855 |

| 20 JULY 2012 |

| * This firing table supercedes the firing tables in | | FT 5.56-A-1, July 1996, for the M855. | | Further dissemination only as directed by U.S. ARMY ARDEC, | | ATTN: RDAR-WSF-T, (Firing Tables and Ballistics Division) | | Aberdeen Proving Ground, MD 21005-5001; 20 July 2012 or | | higher DoD authority. |

| U.S. ARMY ARMAMENT RESEARCH, DEVELOPMENT AND |

| ENGINEERING CENTER |

| WEAPONS AND SOFTWARE ENGINEERING CENTER |

| Fire Control Systems and Technology Directorate | | Firing Tables and Ballistics Division | | Aberdeen Proving Ground, MD and Picatinny, NJ |

APPENDIX 1A FCI 5.56-M855

NOTICES

Destroy this document when no longer needed in accordance with the procedure given in AR 380-5.

This document will not be furnished to the Defense Technical Information Center or to the National Technical Information Service.

APPENDIX 1A FCI 5.56-M855

Explanation of Tables:

Table A Basic Data - A compilation of the basic data required for the fire control solution.

COLUMN

1 Range - The distance measured from the gun muzzle to a target at the level point under standard condi-tions.

2 Superelev - The gun angle in the vertical plane above the line of sight required to reach the range listed in column 1. The superelevation is equal to the quad-rant elevation when the height of the gun and the target are the same.

3 DR/DSE - The adjustment in range for a one mil change in the angle of superelevation listed in column 2.

4 DH/DR - Change in the height of the trajectory cor-responding to an increase of 100 meters to the range listed in column 1 with the appropriate change in the angle of superelevation.

5 Drift - When projectiles are spun for stabilization purposes by gun tubes with right handed twist of rif-ling, the drift of the projectile is to the right of the vertical plane of fire. Drift is the angular displacement a projectile will incur when it is spun.

6 Time of Flight - The projectile travel time, under standard conditions, from the muzzle to the level point at the range listed in column 1.

7 10 M/S CR Wind Defl - The effect of wind deflection due to a 10 m/s cross wind.

8 Max Ord - The maximum height of the trajectory above the gun muzzle, under standard conditions, to the range in column 1.

9 Rg to Max Ord - The distance in the horizontal plane measured from the gun muzzle to the point perpen-dicular to the maximum ordinate listed in column 8.

10 Angle of Fall - The least angle measured clockwise from the horizontal to a line tangent to the trajec-tory at the level point.

11 Remaining Velocity - The speed of the projectile at the level point.

TABLE A

BASIC DATA

FOR

RIFLE, 5.56MM, M16A2/A3/A4

FIRING

CARTRIDGE, BALL, M855

TIME 10 M/S RG TO ANGLE

RANGE Super- DR/ DH/ DRIFT OF CR WIND MAX MAX OF REMAINING

ELEV DSE DR FLIGHT DEFL ORD ORD FALL VELOCITY

M MILS M/MIL M/100M MILS SEC MILS M M MILS M/S

0 0.00 158 0.0 0.0 0.00 0.0 0.0 0 0 949

100 0.60 138 0.1 0.0 0.11 0.6 0.0 51 1 846 200 1.30 118 0.1 0.0 0.24 1.4 0.1 104 2 747 300 2.14 99 0.3 0.1 0.38 2.2 0.2 159 3 653 400 3.14 83 0.4 0.1 0.55 3.1 0.4 217 4 565 500 4.38 67 0.7 0.1 0.74 4.3 0.7 278 7 484 1000 17.34 24 4.0 0.5 2.25 12.2 6.7 617 41 260 1500 47.74 12 12.6 1.7 4.66 20.9 30.2 924 128 168 2000 111.87 5 36.0 4.6 8.54 32.6 100.9 1279 352 109 2500 266.60 2 110.2 12.9 15.44 51.3 331.1 1672 848 86

Table condensed for the Engagement Skills Trainer (EST) Source Selection