This comparison examines two popular Speer Gold Dot .223 Remington cartridges: a 62-grain and a 55-grain projectile. Both represent common choices for self-defense and law enforcement applications in the AR-15 platform, utilizing Speer’s Uni-Cor bonding technology for controlled expansion and deep penetration. The key difference lies in projectile weight, which influences ballistic performance characteristics such as trajectory, velocity, and energy transfer.
Selecting the appropriate ammunition for a given purpose is critical for optimizing effectiveness and safety. The difference in mass between these two loadings results in distinct terminal ballistic behaviors. Heavier projectiles often exhibit greater penetration, particularly through barriers, while lighter projectiles may achieve higher velocities and flatter trajectories. Understanding these nuances allows users to tailor their ammunition selection to specific needs, whether prioritizing close-quarters engagement or longer-range accuracy.
