So, I was lucky enough to get in on PWS's limited run of their Mk 220 in 6.5 Creedmoor. It showed up last week, and over the weekend I had the chance to shoot 80 rounds of varying factory ammo. All I can say is WOW!!!
The first 20 rounds were to break in the barrel and sight the scope. After that, it was game on. I used a box of Winchester match to break in the barrel, and shot a boxes of Hornady 140 gr, 140 gr ELD-M, and Nosler Custom Match. At 100 yards, the 140 Amax was shooting lights out at .6" The ELD-M was almost there, but had some larger groups that did not exceed 1". The Nosler sucked in comparison, and at $42 a box, is not worth mentioning further. The recoil was amazingly light, and there was almost no copper build up in the barrel.
This should be the flagship rifle for PWS. Unreal.