Last year I had this rifle built to my specs by Primal Rights/TS Customs in South Dakota - Shipped in September and it finally arrived at my local dealer's recently.
As expected, overall function of this Rim X is simply faultless - It has been set up for SK/Lapua but seems to run anything without any feed, extraction or ejection issues.
Decent 22LR ammo is currently very scarce so I've just been using up whatever I have on hand to do my initial tests. I don't normally "cherry pick" targets but have attached a sample of the accuracy potential below - All shot minus the tuner as I want to establish a base line first. The 20X5 in the bottom right hand corner is the first 100 shots fired - By column 4, I'd started to get a feel for this gun - The last 25 shots are all in a group comfortably under 1/2" at 50. The other targets have been shot with several flavours of SK, RWS, Federal & Eley - The inner circles on those targets are 10 & 12MM in dia.
If I ever get my hands on a good lot number of Center X, I may see if I can tune this thing but suffice to say, I'm more than satisfied with the overall performance now.