Black Hills 6mm ARC 103gr ELD-X 20rd

The well-known Black Hills MK262 5.56mm ammunition uses a 77-grain match projectile at 2740 fps from a 20-inch barrel. In comparison, the 6mm ARC pushes a 103-grain Hornady ELD-X at 2600 fps from an 18-inch barrel. What does this mean? Due to the higher ballistic coefficient and weight of the 6mm ARC projectile, it beats the best 5.56mm ammunition in terms of retained energy and reduced wind drift at all ranges. The trajectory is nearly identical to 500 yards, and past that range, the 6mm ARC clearly has the advantage.

Many states don’t allow the .223/5.56mm for hunting of big game. The 6mm ARC is an answer to that concern. To significantly “up-gun” from the AR-15 has previously meant going to the significantly heavier and larger AR-10 platform, but the 6mm ARC is purpose-built for the lighter and handier AR-15. More power, same package, what’s not to like?