That's a good question and just what I was searching and not a lot to be found. I've wanted one for quite some time and I finally purchased an R8 Professional in 300 Wby. last spring for deer, elk & whatever other big game I can chase and absolutely love it!. I have yet to get it to any of the "long range" ranges yet, but I was able to come up with a pretty accurate hand load using 175gr Barnes LRX/H4831SC and that will print 1/2" to 3/4" at 100yds consistently...depending on how good of a day I am having. I can only hope it performs as well once I start reaching out to 500-600+.