I have a 1710 (200th anniversary classic) that shoots incredibly well. I then picked up a 452 sporter that didn’t shoot so well. I had a Mullerworks barrel profiled to duplicate the original contour and then I fit and installed on the CZ... it now shoots every bit as good as the Anschutz. 1/4-3/8ths at 50 yards with several different brands. Use them both for squirrels and either does the trick. Some of the CZ barrels borescope very good, even excellent, the one I replaced looked like a washboard with residual reamer marks.
