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