I haven't had mine long, and have so far only shot it on my backyard 25 yard range. And with .22 cal JSB 15.89's it stacks pellets in semi-auto mode as I have it set up with a scope (I'm using the zero eye relief MTC Viper-X 3-12). 15.89 domes only slightly more accurate as compared to FX Atomic hollow points. About 1"+ groups @ 25 yards with a full-auto magazine dump if you hold things as steady as you can. Both of these figures are shot off a bench with front bipod and rear sandbag. So measuring accuracy of the gun more than that of the shooter.
At the power my gun is set for (22 FPE, and I haven't tried to adjust it since receiving it), it would really only be good for the small pesting (ground squirrels) I have been known to do. And I'm darned certain that it would have at least 'minute of squirrel noggin' accuracy at 50 yards.
The Mordax was my introduction to SubMOA barrels. Since then I have also traded for a Brocock Sonoran, also with the SubMOA barrel, but this time in .30 cal and of rifle length. I enjoy the accuracy of both my guns with SubMOA barrels.