Thanks for reaching out Stan! The Walther P38 is chambered for 9mm, which is also known as 9mm Luger and 9x19. Those are all different names for the same exact cartridge. Your Walther is not designed for 9mm +P, which will produce greater pressure than its chamber is designed to contain. In short, you can fire any of the 9mm ammo on our site – unless it is 9mm +P, 9mm +P+ or 9mm NATO, which are all overpressure and too powerful for your handgun. Sounds to me like you just want some 9mm 115 grain FMJ ammo for target shooting. For that I would recommend the ammo you see here on this page, although I personally prefer Federal American Eagle: luckygunner.com/9mm-115-grain-fmj-federal-american-eagle-500-rounds