OK so i have a 10/22 that i have had for a while. heavy barrel, had it pretty much dialed in and it had been that way for a long time. I shot it about a month ago and it was good. ended up with a new scope (better than the barska that had been on the 10/22) so i put it on and the next time at the range i had the scope dial maxed out and was still about a foot low of the crosshair at 50 feet. the next time at the range i took the old scope back out and re mounted it, same thing, i tried swapping the scope rings and couldnt get anything better. both scopes were maxed on adjustment and still way low. what am i missing here. the gun was never dropped or anything and kept in a hard case betwen when it was dialed in and when it had the new scope mounted.