Scope Mounted, Sight In issue

Do yourself a favor and loosen the base screws enough to put a beer can tab under the back if you need to bring it higher or in the front if you need to lower it. Snug them up and bore sight again. When you find something that works put some blue locktite on the screws and snug them up good. If this seems too much for you, take it to a gunsmith! A one piece base setup is a snap as you cant put the rings out of alignment to each other by shimming. 

Just to bring this back to the top.

I actually cut an aluminum can in strips and used one.  Worked like a champ.  I actually placed it under my back ring and will hopefully get to actually 'shoot' the gun this coming weekend.  The weather has been rainy/misty everyday nearly so it has hampered my sighting in.

I couldnt get the base off........on there tight!

Originally posted by Sandracer Originally posted by skywalker I couldnt get the base off........on there tight! Get a tool that fits the screw head really well and apply a constant pressure to unscrew while tapping the top of the tool with a small mallet. If this doesn't work take it to a gunsmith as it may have been red loc-tited and require heat to break loose the sealant. If you break the screw off or strip it at the head it will be a lot harder to get out for the smith!

I know you have already spent extra cash on more rings but another idea (rather than beer can shims) would be to switch to the Burris Signature rings. I have a rifle that has the back of the receiver lower than the front and ran into the same problem. By using the Signature rings with a thicker insert in the rear ring I was able correct the problem and sight my scope closer to the center of the adjustment range. When using a laser (or even eyeballing down the barrel I have always had the best luck at 25 yds. Center the reticle with the laser horizontally and adjust it vertically the be approx 1.5 in above the laser. This is the nominal height of your reticle above your bore and since most centerfire rifles have minimal drop at 25 yds this works well. If you are hitting between 1 -2.5in low at 25 yds you are fine vertically for now (if you are outside of that adjust to be 1.5in low). Fire a few shots to fine tune the horizontal adjustment then move out to 100 yds to begin your vertical adjustment. With this method I can sight in at 100yds with no more than 5 or 6 shots.