I'll clean crud from the action after every range trip. I clean barrels when the accuracy starts to suffer.
After a thorough cleaning where the gun has been disassembled I don't trust it until I've run a few rounds through it for a function test. 3-5 rounds aren't dirty enough to cause a concern and worth it for piece of mind.
Putting it back together wrong may well be my fault and not the guns, but if it has to work, I want to know it will work. No excuses, not even if it's my fault.