Just looking for a list of suggestions to look into. Looking for a few scopes for some plinking rifles and something descent for a Winchester model 52 that I am upgrading to a modern optic.
Let’s talk about the 52. How much do you want to spend? And what use will you have for the rifle? For a rimfire, I'd recommend two things: (a) a low end of, at most, 2 power (if hunting is planned) and (b) parallax adjustment. Particularly for hunting, I'd want a scope with a low power no greater than 2X, and better with 1 or 1.5X. Even a 3-9 gives you a pretty narrow field at usual squirrel-hunting ranges--10 ft. at 30 yards range, for example. The Leupold 1.5-5, on the other hand, provides a 20 ft. FOV at 30 yards.
As for parallax correction, most fixed-parallax scopes are set for 100 yards, yet most rimfire shots are at less than 50 yards. (There may be special rimfire scopes that are set with a shorter fixed parallax range.) I'd want a scope that I could set zero parallax to something like 40 yards and use that for all reasonable shots in a hunting situation. As an example, consider two scopes, one with parallax fixed at 100 yards (as most fixed-parallax scopes are), and a second with adjustable parallax which you set to be parallax free at 40 yards. Here's the amount of maximum parallax error you will have with both (using an objective lens diameter of 36 mm. for this comparison) at a reasonable squirrel-hunting range of 30 yards:
1. Fixed parallax 100 yards: .496" of maximum parallax error at 30 yards.
2. Adjustable parallax set to 40 yards: .177” or less from 30 to 50 yards.
With a scope having a 24 mm. objective lens, the results are:
1. Fixed parallax 100 yards: .331" of maximum parallax error at 30 yards.
2. Adjustable parallax set to 40 yards: .118" at 30 yards and less than .118" between 30 and 50 yards.
Again, considering hunting, it seems to me that a head shot at a squirrel at 30 yards could be missed with the 1/2-in of parallax error present with the fixed parallax scope with 36 mm. objective, but wouldn't be missed because of parallax error with the adjustable-parallax scope. If woods hunting for squirrels, I'd set the parallax setting to 40 yards and leave it there for the hunt.
Cost may be a factor. Here’s my nomination for best all-around rimfire scope with hunting at least one of the activities planned:
It’s the March 1-10x24. I have this scope on my .22LR hunting rifle, and it’s a great scope. At 1 power, the field of view at 100 yards is 105 ft. and at 30 yards, 32 ft. It has parallax adjustment down to 10 yds. But it’s pretty expensive—currently $1550 at one source. A far less expensive option if hunting is in your plans would be the Leupold VX-Freedom EFR 3-9x33 or a Leupold VX-2 Rimfire 3-9x33mm. if you can find one (no longer in Leupold’s catalog). These scopes provide a 36 ft. FOV at 100 yards or about 11 ft. at 30 yards and have parallax adjustment down to 10 yards, I believe.
There’s one other consideration with respect to the 52. It’s a classy rifle and, in my opinion, calls for a scope that looks as if it belongs on a rimfire rifle. This means (a) ideally a 1” main tube, (b) a length of not much more than 12”, and (c) an objective bell diameter not greater than about 1.80”. The bigger scopes just look out-of-place on rimfire rifles, in my opinion. They tend to overpower the smaller rimfire rifle. Your 52 will look good with a proportionally-sized scope.