First a couple of questions.

How many shots did you shoot after the adjustment? If only one then the scope may not have settled into the new setting until after a shot or two, this is common with some scopes.

Did you tap the turret after making the adjustment? With some scopes this helps settle the crosshairs into the new position.

Are you sure the clicks are 1/4" each? I have one scope that is marked 1/4" but they are closer to 1/2" at 100 yards.

I would verify that the gun is grouping consistantly with the scopeat it's current setting and then adjust it, tap it, and verify again (use a known good grouping load). If it is not consistent I would check the mounts, stock screws, etc. to see if there was a mechanical reason for the problem. You could also check without the scope using the iron sights to verify the gun will group. If all else fails, it could be the scope is going bad and needs replacing.

Good luck and keep us posted.