I almost bought one when they were still in production but I was told not to feed it the high velocity 32 grain CCI Maxi Mag +V ammo, the guns should be fed 40 grain ammo, not heavier, not lighter.
As I understand it, it's basically what Snyper said, everything has to be perfect with a case that long and the speed of the bolt during cycling is affected by bullet weight and velocity changes.
Since I was specifically intending to use the CCI +V load which I had a lot of, I decided to skip the semi-auto and go with a bolt action.
Tom