It can be hard to tell without testing whether the reticle remains centred. Pecar scopes are marked on the adjuster saddle, just a dot means moving reticle, a dot in a circle means permanently centred reticle (I think, happy to be corrected). Some old scopes have no windage adjustment, so they're easy to tell. I have a Nickel scope with elevation and windage turrets, but the reticle does not stay centred.
If the reticle is not much off centre it's not too bad, but I prefer them centred. Look for mounts with windage adjustment built in, and depending on the mount design, you can use shims to correct the elevation. In my experience they hold zero very well once set.