My old MKII has been the most accurate .22 I've ever had. It's old and beat-up, but just shoots great. Only complaint is that the trigger pull is a bit heavy (pre-accutrigger). But still accurate enough to make head shots on starlings/crows at 40 yards and head shots on groundhogs at 70 yards. Mine likes Winchester Power-Point 40 grain hollow points- which I have used for hunting, but the most accurate was RWS subsonic hollowpoints- dime-sized groups at 40 yards.