naabot na gyud na man ta ani ug pinirmahay oi... unsa mana MOA? hahahahaha
MOA - Mall of Asia??? Minute of Angle??
or
Kani sya?
Now, the short version as it pertains to your bases. Think of MOA as inches @ 100 yards. It's not exactly the same, but it's close enough. So, a 10 MOA base is going to give you an extra 10 inches of inclination/declination at 100 yards, 20 MOA is 20 inches and so on. Minutes increase as the distance increases. 1 minute at 200 is 2 inches, 1 minute at 300 is 300 inches. So if you hear someone say "My gun shoots 1 MOA at 300 yards" they're saying that their gun shoots roughly 3" groups at 300.
The only practical use for these kinds of bases on big rifles is for long distance shooting. It's not required for normal ranges, because most scopes have enough adjustment that you can get away it and flat shooting rifles don't need that much adjustment at close range (300 yards). However if you're shooting a long ways out, and you want to zero your scope at those extended ranges, you're going to need to put extra tilt into the equation otherwise your scope is going to run out of adjustment way before you get there. In your case unless you're stepping up in scope in the process I wouldn't bother with getting bases that give you extra elevation. There's no point in it. Small magnification scopes just aren't intended for that. If you were shooting something larger, like maybe a 4-16x, 6.5x20, 6-24, 8-32, etc. then it might be worth pursuing.
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