I recently purchased a lot of AR parts, and included were three new AR9 barrels, ...all stamped "Palmetto".
The thing that puzzles me is that they feature a 1:7 twist! I have NEVER seen a twist that fast on a 9x19 barrel!
I sent Palmetto State Armory an email asking about the barrels, but they have not responded.
......Has anyone here had any experience with a twist this fast in a 9x19 barrel?? I'm wondering if they would be usable with really "heavy for caliber" cast boolits.