Most top level competitive shooters will use hand loads. They work up their loads to balance accuracy, and recoil while maintaining minimum power factors. There are so many choices for bullets in .45 ACP available to a hand loader that what a particular shooter uses will be the result of lots of experimentation, and will be fine tuned to that shooter and the gun they use. A large part of it is also the shooter's ability to control the recoil through proper grip, stance etc. and practice, practice, practice.