RE: wind drift or too much powder????
Yes I have seen others tap the scope after any adjustments are made. The military does with there combat scopes. It helps seat the cross hairs in the right location otherwise your first shot will be the one to seat the adjustments. With cheaper glass it may take a few taps or shots to get it seated.
When I mean tap I mean they really hit it with decent force but these were combat scopes I doubt it would be good to hit hunting scopes too hard.