I figured I would add my data point to this thread. I shot my RPRR today for the first time. I spent 7 hours behind it on a concrete bench. I used the UTG Leapers Recon bipod and a rear bean bag. Scope was an SWFA SS 12x42 MIL/MIL. I chronographed every shot with a Magnetospeed V3 mounted to the handgaurd not the barrel.
I fired 64 groups with various ammunition, all at 50 yards. Most were 5-shot groups, some were 10-shot. I fired 10 fouling shots between ammos, and cleaned the barrel a few times during the day. I gathered a lot of data.
First, my rifle functioned flawlessly. Perfect clambering - no bullet damage, extraction, and powerful, ejection. Trigger was fine, I did not adjust it. I fired groups with each ammo, with the thread protector, a titanium muzzle break, and exposed threads. The gun shoots best with the muzzle threads exposed.
Accuracy: This is a 1.8MOA rifle with mid-grade ammo. That is fine for what I paid,$400. Factory barrel, sporting chamber, nuff said. The platform is brilliant. It just is. Ergonomic, balanced with a scope on it, trigger is fine for PRS and can be improved, the rail is good quality, as is the handguard. I did the aluminum tape bedding before shooting the rifle because my block was literally falling out of the chassis. But the bedding worked and the gun was not throwing wild flyers. Very low shots showed up on the chronograph readings as slow rounds as expected.
I like it. I ordered the ER SHAW match barrel.