6.5 Grendel Versus 6.8 SPC

Ever since Alexander Arms’ 6.5mm Grendel and Remington’s 6.8mm Special…

Ever since Alexander Arms’ 6.5mm Grendel and Remington’s 6.8mm Special Purpose Cartridge (SPC) were introduced during 2004, there is ongoing debate between some members of the shooting community as to which round would be the better choice to succeed 5.56mm NATO for military use.

combat2This article will attempt to provide an objective evaluation as to whether the 6.5 Grendel or 6.8 SPC is the superior alternative by comparing the characteristics of each round and the measures necessary to utilize these cartridges in the M4 carbine, M16 squad marksman rifle, and M249 light machine gun.

The genesis of the two rounds could hardly have been more different. The 6.5 Grendel was conceived as a sporting cartridge and it was designed to give the civilian AR-15 owner the capability for precision shooting at long range. Load development centered on competition and hunting rounds, which remain the only types of factory ammunition currently marketed. However, the performance potential of 6.5 Grendel caused some enthusiasts to advocate it for use by the military and factory loadings that would be legal for combat use are slowly becoming available.

The birth of the 6.8 SPC was just the opposite, having been created as a combat cartridge for special operations, and developed specifically to provide the military M4 shooter enhanced terminal effects on enemy personnel at typical engagement distances. Because of this a significant percentage of 6.8 SPC development efforts by commercial firms has been devoted to loadings that would be lawful for land warfare, some of which have full metal jacket, armor piercing and hollowpoint match bullets.

Load Comments
  • Jonathan

    The 6.5 Grendel, respectfully, is being compared to 6.8 spc in terms of compatibility with/for the AR-15 weapon systems. Lapua having the same base diameter and overall length as the .308 is irrelevant. We speaking in terms of replacing the 5.56, not the .308. Anyway, the only reason I posted this blurb was to inform everyone that 6.5 Grendel is now an official SAAMI cartridge.

  • atomic

    The 6.5 Grendel is a very capable cartridge but I personally would think the 6.5×47 Lapua would be a superior choice as the base diameter and overall length of the 6.5×47 Lapua are similar to the .308 Winchester, allowing it to accept the
    same bolt heads and fit into similar actions and magazines.

  • Nickeles Newton

    A 6x26x39 use to be a NATO round in a Mp44 Rifle

  • Nickeles Newton

    I think a 6x26x39 is better to use because its light and powerful or 6x00x39 or 6x00x43 it would be best.