When I made mine I just set two quarter inch screw driver bits on my bases and taped(electricians tape so it would stretch) the scope to the barrels. I made sure the scope was optically centered and used a laser bore sighter and shimmed the rear of the scope to determine the difference in height between the front and rear base.

Interestingly my bevel on the slider is just the opposite, wedging the rear base tighter as it moves forward. My rear legs are shorter than the depth of the base, which makes sense to me as a slightest bit dirt in the base would not allow it to return to zero.

Last edited by oskar; 09/12/13 12:56 PM.
After the first shot the rest are just noise.