I am not sure what's going on with mine. I had it out yesterday sighting in the new Mueller scope and was all over the place. I fianally gave up as this was the fourth gun of the day .I had this barrel shooting solid 1" groups last yr at 200yrds but put new scope and thumbhole stock on it and am worse than square one now .Will go completely thru it and try again I know the barrel is capable. Kurt