Starline Brass 68SPCEUP50 Unprimed Cases 6.8mm Rem SPC Rifle Brass 50 Per Bag
The 6.8 SPC was designed for the military as a cartridge that landed between the 5.56mm NATO and the 7.62mm NATO to be used in the AR-15/M-4 platform. It loses very little magazine capacity versus the 5.56mm (25 vs. 30 rounds), but has better knockdown power without much more recoil.