I already have a CFX in .177 with the GRT-III trigger, gas ram and Maccari Tesla piston seal upgrades, and it shoots like a dream. I can only imagine that the Royal will shoot the same once I get the ram and seal upgraded too. However, before any of the upgrades were installed, my CFX in .177 was shooting 1/4" groups at 33 yards, but I haven't tried shooting groups yet with the upgrades. I do that at the indoor range where there's no wind and I haven't had time to get myself there.