1. Don't put the cart in front of the horse. SHOOT IT first .......Then decide if you need to do something.
2. Barrel harmonics are tough. There are a lot of variables involved.
3. Free floated, pressure point, fully bedded, what type of stock, weather conditions, etc., etc., etc. There was a time when all stocks were wood, and humidity was always an issue. Then we had laminated stocks that were a little better but often heavy. And then synthetics that are unaffected by humidity but can be very fussy about pressure on the barrel.
Bottom line – let the target tell you and don’t jack-rabbit around from solution to solution. Wait until you are SURE you need to make a change.