There’s no one-size-fits-all approach to determining the best magnification for a spotting scope because it will depend on several factors like your very own style of target shooting or hunting, and more.
If you’re deciding on which spotting scope magnification to get, you might want to look at these factors: (1) the amount you’re willing to spend on a spotting scope, (2) types of target you’re using, (3) the conditions you’ll most often use it in, and (4) whether it’s close-range or short-range shooting.
One thing that many people often believe to be true about magnification is that bigger is better. It turns out that there are some drawbacks as you increase magnification. Target Tamers lists some of them: (1) decreased brightness, (2) Decreased field of view, (3) increased image instability, and (4) degrading image quality.
It also helps to look at other factors that have greater influence on how you can get clarity at long distances. According to https://www.targettamers.com/guides/best-spotting-scope-magnification/, it’s true that spotting scope magnification plays an important role in spotting scope performance but you should also consider the quality of glass and coatings.
