B23
Gold $$ Contributor
What ever you want to call it, it's still a small increase and at equal pressure is good for about 100fps over the standard 223, BUT, the "improved" versions get the snot pushed out of them because the 40º shoulder and straight case hides pressure so, yes, you often hear of 2-400fps faster velocities with a 223AI.1.5 to 2 grains is not TINY. That is pushing ten percent. Have you ever HAD a 223 Ackley there fella? You sure don't act like you have...
A typical 223A is 150 to 200 FPS faster with a 50 -55 grain bullet. That is not controversial in the slightest.
"Have you ever HAD a 223 Ackley there fella?" Oh, you mean like this one? Only for about 15 years.

