If want to go out to 500 yards for targets, I would suggest at least 24X magnification.
Bushnell closed out their 4200 Elite series and you might still find one of them on sale / close out.
I bought 3 of the AO series at around $ 380-400 and use them regularly.
I also have a Millet 6-25X56 with a 30mm tube. I put it on my Savage 10FP .308 because it looks great with a large scope on the black Savage.
The reticles on the 3200 and even on the 4200 are pretty thick in comparison to most target scopes.
If you are going to go long range most of the time or have a really accurate rifle, you might want to try a target scope. They have thin reticles and won't obscure your aim point at 500 yards. Actually, they also let you aim for flys wings at 50 yards if you get a high magnification model with AO.
Weaver makes a T-36 and I have 3 of them all of which cost about $ 400, Sightron makes a 36 power and I have one of them too.
Leupold makes a 45 power and that is a sweet scope.
All of mine are AO models so I can also use them at 50 yards with my target 22LRs when I want to shoot groups for bragging rights, but they come into their own when you are out at 200 yards or more.
With that much magnification, light gathering capability becomes important.
Of the 3 brands, Leupold is the sharpest and brightest but also the most expensive by about 2 to 1.