Some more comments to my last post.
Mule Deer (John Barsness) posted some years ago that a BOSS with the brake ports was the loudest brake he had encountered. It worked to reduce recoil, but it was LOUD.
He also correctly pointed out that if your loads varied much in velocity with temperature, the rifle might not group as well at a different temperature than when it was "tuned." This is true, but it also true with non-BOSS equipped rifles. If your loads vary much with temperature, a load that was developed at one temperature may "go south" at a different temperature. He has written a good bit about this.
If the OP is seriously considering trading for the rifle, I suggest he determine if a CR weight is available. If it were me, that would weigh heavily in my decision. One needs to search specifically for the part number for a Laredo chambered for 7mm STW. That may or may not be a common weight. As far as I know some weights are appropriate to more than one chambering.
