I just bought a new Ruger P89 and will be reloading for it. I know there is a lot of opinions about what bullet weight is best in a 9mm, but the question I have is this: does shooting a heavy bullet like a 147gr create more wear and tear on an action, than say a 124gr. bullet ?
In the 9mm Parabellum, the difference would be negligible. Auto pistols handle recoil differently than revolvers, and recoil is in a much more narrow range than in revolvers.
In my .45 Colt cartridges, I have shot 185 gr. JHP and 350 gr. cast bullets, and the heavier bullets generate far more recoil energy than the lighter ones. And recoil puts a great amount of stress on a revolver's top strap. I tell you this from experience, having stretched the frame of a Colt SAA.