As JohnPifer said, Kahrs should be loaded by releasing the slide via the slide lock. Manual specifies this and many people ignore it. You'll see all kinds of people shooting Kahrs on YouTube releasing the slide by hand. Some people can do it without issues, some can't.Please explain what this means.
The reason I believe, is that Kahrs have extremely stiff recoil springs. It is very easy to unintentionally "ride the slide" when loading if not releasing the slide stop. Many "problematic" Kahrs magically get reliable when this simple instruction is followed.
Kahrs have some other things going on as well, a trigger some love some hate, and slightly offset extremely steep feed ramps that can be ammo picky.