When the 7prc was released, I knew I had to build one. PROOF was quick to offer a pre-fit barrel. I paired this with a Zermatt arms origin action and torqued it to the recommended spec. Tried out the go no go gauges and it was spot on. Sub moa accuracy with Hornady eld-x factory ammo right out of the box. I'm sure it will get better as I get more rounds down it and more comfortable behind the gun. This is the second PROOF pre-fit I have purchased and both are perfect.