The beauty of the .357 magnum is that it is such a great cartridge that there are few bad loads. There's a lot of velocity to expand even mediocre bullets of various weights.

I think full power ammo is a good choice, provided you shoot them well, Canoesota. If you only have six on board, each one might as well be a blockbuster punch! A 6" .357 is like a handrifle as much as a handgun.