Let's get back to the question,...although it leaves alot of wondering if your elevation is all the way high,...or all the way low. Well let's assume you're hitting the target low,.and can't bring your POI (point of impact) high enough to hit where you're aiming. With most break-barrels,...there is always some degree of "droop" where the barrel is attatched to the action,...or reciever as some call it. So #1,...forget about how straight and true the mount is to it,...if you have barrel droop,..the problem isn't in the mount, but the scope and where it is set! You want the scope and the barrel to be on parallel planes to each other. Say you're shooting, and hitting low as assumed,....if you shim the front of the scope,...in all actuallity,...you will be moveing you scopes POA (point of aim) even farther away (higher) from your intended target,....in other words you'll be going in the wrong way!!!!! In this case, you'll want to shim the rear of the scope so it will be parallel with the barrel!!! It's a common mistake for folks to shim the front of their mounts,...and I've been guilty of doing it myself when I started fooling with these "BB-Guns"!!!! LOL's Best thing to do would be to recenter your elevation retical, shim the rear of the mount/ring with a number of different types,....aluminum can strips, 35mm film negatives, or even strips cut from a plastice soda bottle. I prefer aluminum myself. Place two or hree strips under the scope tube on the rear ring portion of the mount/rear ring. and then go back and adjust the elevation if needed. It may take a few times of "trial and error", but once you find the right amount of shimming required to hit close to your POA, then make your final adjustments with the rets and you should be good to go!!!!! Good Luck, tjk
