Now for you folks doing a remove and replace on a sighted in scope, who have a barrel spud type collimator, first install the collimator in the barrel very carefully and note where the crosshairs indicate "0". Carefully remove the old scope without moving the collimator and install the new "optically zeroed scope (that you used the mirror trick on) and when the new scope is okay for eye relief, and level, and tightened down, adjust the crosshairs to the collimator position noted previously. Of course you can use the rear base windage screws on Redfield type bases for initial scope windage if it's off much from optical zero. This is called mechanical zero, and works on Millet angle-locs too. This gives you the most windage adjustment capability. Most times it's near perfect. Good shooting. /ubbthreads/images/graemlins/smile.gif
