Butt Kickin' 5.56 Bullets - ep5 - 70gr Hornady GMX and CFE 223
This video details a reloading and ballistics test of 70-grain Hornady GMX bullets in 5.56x45mm NATO using CFE 223 powder. The instructor, Johnny, aims to achieve higher velocities than previously tested with Varget. While excellent velocities and consistent standard deviations were recorded, the accuracy (group sizes) was consistently poor across multiple charge weights, leading to further investigation into potential causes like brass quality.












