What is the math for figuring what moa base I have. Point "A" is the distance from the bottom of the base to the top - .477" (this is the back edge of the base). Point "B" is the distance from the bottom of the base to the top - .385"(this is the front of the base). Distance between the two points measured where the base touches the action is 5.386". So slope is; (.477-.385)/5.386 = 0.017081. What does that tell me??
I think it tells you to stop measuring such stuff, and be concerned about whether your scope has enough adjustment to achieve the intended shooting.
Here's what to calculate. Crank through the scope's entire internal elevation adjustment range a couple of times, just to be sure of the figures. Count the clicks, and derive the total MOA adjustment from top to bottom. Then divide by two, and you have the midpoint. Normally, on a flat mount, you'll use several MOA above the midpoint to get a zero on a 100y target.
If you'll be shooting at short range, i.e. 100-300y, then you really don't need to be concerned with how much 'up' adjustment remains in your scope after zeroing at 100y. On the other hand, if you'll be shooting past 600y, or if you've chosen a scope (like the Bushnell 6-24 with about twenty MOA total adjustment) with little vertical adjustment , then you need to figure out whether you can do what you want.
After you get your 100y zero, crank the elevation knob all the way to the top and calculate the remaining MOA adjustment. Is it enough to get you where you want to go?
A forward canted base is intended to help maximize your scope's vertical adjustment range by putting your 100y zero below the midpoint. Again, depending on the scope being used, and the distance being shot, the canted base may be a non-issue.
