20rd box of 55gr .223 Rem FMJ-BT ammo from PMC Ammunition.

Technical Specifications
MPN 223A
Bullet Type: FMJ-BT
Weight: 55 grain
Velocity (feet per second)
Muzzle: 3200
100 Yds: 2833
200 Yds: 2493
300 Yds: 2180
400 Yds: 1893
500 Yds: 1635
Energy (foot-pounds)
Muzzle: 1250
Bullet Path (inches)
Muzzle: -1.50
100 Yds: +1.43
200 Yds: 0
300 Yds: -7.06
400 Yds: -21.48
500 Yds: -45.47
Ballistic Coefficient 0.243
Bullet Length 0.740
Sectional Density 0.156