Yeah what NGIB said. I owned a G22 for years. Absolutely no problems.
You shouldn't have any worries with your G22.
Just don't use cast lead bullets, the lead fouling builds up in the polygonal rifling and can cause high pressures.
If you wish to use cast bullets just buy an aftermarket barrel with conventional rifling and shoot whatever you want.
I just stuck with shooting jacketed bullets (FMJ & JHP)
Hellfire, Doom, Watch the hatred spin
Beyond the speed of sound---
Fire it up, Let the engines roll
It's time to burn it down