Wife gave me one (encouraged me to buy it) for CHRISTMAS. I worked for a few days developing a load, and now I have a real jewel of a utility rifle. It's powerful, accurate and reliable. It's also the lightest and handiest on my old mil-surp rifles. Recoil is stiff, but the stock design has it coming back into my shoulder without beating up my face (the way Mausers do).
So far I've been using jacketed bullets (cast is coming) with excellent results.
I shoot into a "natural" backstop in the woods, no benchrest.
From kneeling, I reliably get 2-3 inch groups at about 100 yards.
I do NOT use the LEE data that came with the dies. I was getting blowback, hangfires and bullets stuck in the barrel. It seems slower powders in the range of H4350 work best.
I did find that after getting the stuck bullet out (I carry a cleaning rod as part of my "kit") the rifle functioned without a problem with the spilled powder in the action, which usually puts a bolt action out of comission. This rifle seems to be far better than the "armchair experts" rate it .