So far the only defensive load that I have put through mine are 147gr. Remington Golden Sabers. They feed reliably in mine, but to be honest, I have had zero failures of any kind. This gun kicks more than my PPK/S though the Walther has a more snappy recoil. I notice the gun does not return as fast to the target like the .380 but, I think it is easily fixed with practice and I am going to buy the Pearce grip extension for the 6rd mag. I don't think I would put anything +P through it, not because it can't handle it, rather I don't hink I could handle it very well. I cannot differentiate the recoil between the 147gr. bullets and the 115gr. practice rounds. She's a tiny, little powerhouse, that is for sure.