I see polygonal barrels listed at Pac-Nor in smaller calibers. I have a couple of questions here that I intend to direct to Pac-Nor, but would like a second opinion first (if that makes any sense). First - Are there any distinct advantages to this system, regarding either velocities/pressures or accuracy? Second - I was thinking this was a hammer forged process. Is that still the case, or have they perfected a button pull process? Thanks..