15 and 21 feet are my practice distances with my PM9.
I belong to one club that only lets you put your targets at the back stop, indoor range.
At the 50' back stop with a 3" barrel and my old shaky hands I'm happy to hit a 8.5x11 target almost all the time.
50' should give me room to just run away or dodge. 21' requires accuracy.
It it's not on fire,
It's a software problem.