A decent target sight should have an easy and repeatable means to adjust for wind , light condtions and disatnce. Ever see or heard of anyone using a Williams recently in international competetion? it has its uses to replace original iron hunting sights, but it's not a target sight.
They did make half decent ones over 20-30 years ago, but not recently and never as good as they should have been.
Look for Anschutz, Gehmann, Walther, Centra, RPA, Gruenig