I have always shot +p ammo (Speer Gold Dot, Remington Golden Sabre) for SD in my G19. I do not shoot a lot of it, but enough to make sure it feeds, ejects, etc. properly. I have not shot +p+ ammo out of my G19, but would like to do so (Buffalo Bore in particular). I know it is fine with the Gen 4 pistols and the stiffer guide rod spring, but is it harmless to the pistol to shoot it in a Gen 3 G19 with stock everything. Again, I don't shoot lots of SD rounds out of it, but don't want to shoot something I shouldn't. In fact, I want to be confident that if I wanted to, I could shoot as many SD rounds out of it as I would like without any adverse effects to the pistol. Chime in experts!