Has anyone lost velocity when going AI? That is what I experienced when I converted a 243 to 243 AI. I had to increase my load by 2 grains to get back to were I started. It does look cool though and gives you something to talk about at the Range.
TEXMAG
Increased case volume. Same amount of powder as before in a larger case equals less pressure, and that equals less velocity.
The idea of an improved cartridge is to primarily increase powder capacity.
