Re: 20 moa vs 40 moa base
Gonna depend on what you are shooting. that 20 minute base will take you to your 800 yards and beyond, probably out to 1000ish depending on how much elevation is on your scope.
If you are shooting long range 22 lr way out the 40 minute out work. BUT you may lose your ability to zero up close depending on your scope.
If you are shooting a cartridge that is capable of extreme range, ie 50 bmg, 416, 338 etc the 40 minute base may the way to go. You would probably not be shooting any of these style rifles in close, so a close range zero would probably not be an issue. AND you will probably actually need all the elevation you can get.
I will say that if you run a scope with lots of elevation, you could run the 40 minute. That Leupold will not I dont think. On me 22 i run an swfa fixed 10. It has a lot of elevation, So I can still run the heavily canted base and get a close zero.
Again, like was said, a 20 minute base will cover most any "typical" base.