I can attest to the criterion I bought one about 2 months ago in 6.5cm its a tack driver no doubt about it shoots in the .2s off a bipod. And at 1st i thought it was gonna be hard to clean lots of blue patches for the 1st 30 rounds took if back out and put 50 rounds through it yesterday i cant even get the slightest hint of copper out of it!!! Mines a 28in full bull though on a 12bvss weighs in @ 12.5 fully equipt its heavy but i dont mind the weight i dont have to carry it far as i dont have to get close to game range em dial dead criterion makes an awesome barrel at an unbeatable price for what u get. Im sure the lighter barrels will perform just as well though. Good luck let us know how it turns out!