As the author figured out, the wrapped barrel didn't shoot anywhere near as well as the components that were installed. Rock barrels have the potential to shoot in the 2's and I have seen them do it.
In fact, it shot no better then most factory rifles from Savage, Rem and tikka with a bit of TLC ie bedding and handloading. And I am refering to their hunting rifles that weight a whole lot less.
{Now we have no idea the conditions he shot under and how good a shot he is with a bipod. We also don't know if that barrel would ever shot GM ammo to its full potential so...}
so he may have a 'light' rig, but it has a lousy cold bore POI and accuracy that is more like MOA or bigger which will undoubtly get larger as he reaches out - note vertical and 'outs' in his groups. NOTE: he does say, his shooting is not ideal off a bipod and his rested shooting was quite a bit more consistent.
Maybe handloading can help - I am sure it wouldn't hurt.
Now this is just one example but it continues what we have long known, machining huge hunks of steel from a perfectly good match barrel then sticking something back onto it is not the ideal way to retain or improve on performance.
I sincerely doubt extra stress relieving was done after the machining process under the assumption that cut rifle barrels simply have no latent stress - good luck with that. There is also an assumption that the wrapping process did not put variable stress points on the barrel.
If the owner had just gone with a #4 or 5 contour that was stressed relieved AFTER contouring, he would have the chance at a 1/4 min rig that WOULD keep its accuracy for at least the needs of a LR hunter.
It is such a pity that the BS continues that only thick barrels can be accurate. It is true that a light contour barrel will start to over heat sooner then a heavy barrel but for what is needed in hunting - not supressive fire - it can work just fine.
Oh by the way, to make any rifle shoot better, just forget about the shots that are way out yonder and measure the cluster that best meets your accuracy goals.
I wonder if they will let me do that this weekend at the F class match
YMMV
Jerry