Thread: Anyone played with 223AI?

Originally Posted by Jaco Goosen

Generally the improvement is 5 to 8% in my experience. The 223 will gain 100fps with the heavies and a bit more with the lighter projectiles.

The calibre with almost no gain when acklied is the 308Win. It gains less than 10fps, with 1 to 2fps gain to be the norm.
@zimmer I like your reading material mate. For me the big gain is in shooting the heavies at a little faster speed.

The newer case designs and AI cases also need very little trimming.
I hate brass prep so have been pleased with my 6.5cm, 7 firings on Lapua brass and never trimmed.