MR1 .223 only?? in R1 Rifle Posted August 31, 2011 The 5.56 mm NATO requires a lower barrel twist rate to stabilize the bullet it is recommended to use a 1 in 9 twist rate or lower for 5.56. Coach Factory Outlet store
MR1 .223 only??
in R1 Rifle
Posted
The 5.56 mm NATO requires a lower barrel twist rate to stabilize the bullet it is recommended to use a 1 in 9 twist rate or lower for 5.56.
Coach Factory Outlet store