Barnes Precision Match Ammunition 5.56x45mm NATO 69 Grain
Barnes Precision Match Ammunition 5.56x45mm NATO 69 Grain 223 and 5.56-grade ammunition is designed to give competitive rifle shooters that extra edge. Engineered with the finest components and attention to detail, these rounds are produced to give shooters every possible advantage when accuracy matters most. Buy Barnes VOR-TX Long Range Ammunition 6.5 Creedmoor online.
So, the casings and chambers .223 Remington and 5.56×45mm NATO are virtually the exact dimensions. Still, the rounds are not entirely interchangeable because .223 Remington is designed to handle much lower pressures than the 5.56×45mm NATO.