I've been waiting for someone to try mixing the new 6.8 bullets that have been created for the SPC with a standard 223 case. This guy seems to have started the project just last spring.

I missed the first round of barrels from them, and was wondering if anyone on here had picked one up and given the new cartridge a try. I am still a little skeptical of the results they are posting (within 200 fps of 6.8 SPC Spec II). I have yet to find any pressure test data for the rounds.