Huh?The P229 mags are a little different and don't fit the P228.
Yes, they do...in fact, the part number is the same.Somebody must have forgot to tell my P228 that it will not take P229 mags. They are identical, and function perfectly, and fit perfectly.
If you really crave a mag that doesn't need reloading that often, use the SIG-factory 9mmP 20-rounders...they seem quite popular with the ninja wannabes these days.