223/5.56 vs 6.5 Grendel vs 7.62x39 | 100 Yard Energy/Velocity Test
This video presents a 100-yard ballistic test comparing 5.56x45mm NATO, 6.5 Grendel, and 7.62x39mm ammunition. The host measures muzzle velocity and energy, then re-measures at 100 yards to determine velocity and energy loss. The results highlight how bullet weight, ballistic coefficient, and diameter affect downrange performance, with the 7.62x39mm demonstrating surprising energy retention despite a lower BC than the 6.5 Grendel.













