Re: People with low power scopes, get in here.
Situationally dependant.
For example. On one rimfire (a CZ 452) I have a V16 Weaver. It is a very reliabl and extremely repeatable scope. It tracks quite well. When hunting I keep it on 4x and shoot with both eyes open. When shooting groups, I dial it up to 16 x and the higher magnification has proven to be a real asset.
On the other end of the spectrum, I have an old Marlin Model 25 that I trimmed the barrel off at 16.25"s and threaded for a can. When the can is not being used, it wears an A2 flash hider. The optic it wears is a fixed 2.5x Weaver. In having other scopes on this rifle previously, I know how accurate it is. With only the 2.5x scope on it, I cannot take full advantage of the accuracy potential of the rifle.
Pic of the CZ and Weaver V16:
That being said, the chopped little rifle is awesome for its intended use. It is very light and is quick to shoulder. The 2.5x scope has a huge field of view and running jackrabbits are quickly picked up in the sight picture. Off the bench, it may not be ideal, but in the tall sagebrush it comes into its own.
A 2.5x10, 3x9 4.x14, 4x16 or something in that range is rarely a bad choice for a rimfire for a general purpose piece.
A while back I picked up a Marlin 695 and purchased a fixed 4x Weaver. The optics are bright and clear. It is a perfect match for that rifle. The optic actually cost more than the rifle but has proven to be a great choice.
In summary, if you want to punch itty bitty groups, higher magnification can really be an asset, as long as the glass is of good quality.