rtd, I've got no complaints thus far shooting 220's right at 1050fps. You cant tell that you're not shooting a 10+" barrel.
I'd like to hear maks accuracy results and Jon had pm'd me with really good groups from his "evo" barrel.
My next step is an adj gas block, or a more restricted port for the high vel loads.
I've been thinking some 110VMax's loaded up screaming fast would make a pretty decent personal defense weapon set up as an AR- pistol w/red dot optic? I've got one of those old ChiCom 100+ round drum mags around here somewhere........