I have shot several & made 3 different Wildcats from it. I'll try & help with any specific questions you may have. The parent works very as is. I thought it was a very good substantial case to base a 7mmXR, 300XR & a 338XR off of. What has worked the best for me is Fed. 215M primers. Retumbo & N570 is your friend. I have not pushed the calibers very hard. They started shooting very well right off the bat so I just didn't search out a maximum load. The 7mmXR is 10.4" high at 100 yards will put you on @ 700 yards. The 300XR spits a Hornady 208 AMAX out at an avg. for 20 shots of 3157 fps. I don't remember what the 338XR does. I just shot it enough to see that it was going to be a shooter......it is.
The only two bullets that I have tried are Hornady's 208 AMAX & Berger's 230gr. Hydrid. Excellent accuracy from both. I would shoot either or in a match. I'll try Lapua Scenar 155gr. in the near future. I plan to shoot all three in out 1000 yard matches by the end of the summer.