This FMJ (full metal jacket) 223 calibre (also known as 223 Remington) bullet is 0.224″ in diameter and comes with a cannelure to help secure the crimp.
The full metal jacket bullet is not to be confused with total metal jacket bullets. The rear of these bullets has exposed lead. This bullet was designed to handle the higher velocities of a rifle round. They are a consistently accurate, non-expanding, bullet that gives you a flat-shooting trajectory. They leave a small exit hole in game and put tight groups in paper. They’re specifically made for smooth, reliable feeding in semi-automatics.
For your convenience – follow this link to Hodgdon reloading data. http://www.hodgdonreloading.com/