i was zeroing my 10/22 semi custom today and was grouping 3 touching shots at 45 yards ish and happy but then my zero dropped 3inch !!! Without any turret adjustment. I shot approx 60 rounds ? Anyone any ideas I'm using a mtc connect.
I know cleaning may help but 3 inch is a lot to drop at that range. I was still grouping well at 3 inch low