5.56x45 ammunition produces higher muzzle velocity than 223 with the same type of powder and the same bullet, so the actual pressure produced by 5.56 has to be greater than that produced by 223.
Okay, maybe we're getting somewhere here. Agree with you on the velocity/pressure thing. What specific 5.56 ammo are you referring to, and can you link to an actual document? And how do you say "5.56x45 ammunition produces higher muzzle velocity than 223 with the same type of powder and the same bullet" unless you
know what powder is used in both types of ammo? Who produces SAAMI spec .223 Remington using WC844, WC 846, or whatever, and what factory producing .223 Remington tells you what powder
they are using?
