Sakoluvr,
I use a Forster FL sizer for loading the 6.5 PRC, but also used a Hornady FL die for a while. Both sized the body fine for my rifle's chamber, which Charlie Sisk installed with a Pacific Tool & Gauge reamer he ordered. (It was his first 6.5 PRC barrel job.) Haven't had any difficulty resizing brass.
AW2 reamer or saami or do you know?
You would have to ask Charlie Sisk.
My rifle was barreled before most 6.5 PRC factory rifles even appeared. Was asked by Hodgdon to do an article on it when it was announced, but after contacting the various manufacturers it turned out none would be here in time. So Charlie ordered the PT&G reamer he wanted, and I paid for it--along with a #4 contour Lilja 1-8 twist barrel.
Charlie is pretty particular about reamers, which is why I suggest asking him about the specific dimensions. As noted above, I haven't had any trouble handloading for my rifle with either Hornady or Forster FL dies.
