Guys need help!! Been having my 22 mag for over a year and up until a month ago I could keep 5 shots in a inch at 25 yards using cci 40 grain hp , then all at once it started getting jumpy and would shoot 2 in and the third would be several inches away , well put new scope and mounts thinking bad scope or loose mounts and still the same. Then sent gun to savage to go over it and received gun back and it looks brand new so put new scope and mounts back on and have trouble keeping it in a 4 inch circle at 25 yards please help with your thoughts of issue, maybe deposits in rifling? Idk