The impact of sleeving on handling numbers is predictable. If you plan to replace thin tubes with thicker, you best be prepared for handling changes. But then, the handling you experience with thin tubes is not like when the gun left the maker. The weight, balance (teeter-totter), and swing efforts are not "ruined", rather, they are changed. If you like light weight, rear balanced, low/fast swing efforts you may find the handling of a sleeved gun degraded. On the other hand, if you like weighter guns with more forward balance and higher/slower swing efforts you may well find sleeving a gun improves its handling.
DDA
