The thing is…revolvers CAN jam. The most common culprit is an unseated (high) primer.
That being said…it’s very easy to check this before the revolver is actually put into play.
First—always visually inspect your ammo (you should do this with carry loads for an auto, too…and you really should do it with your range loads, as well). If a primer looks high, or unseated…don’t use it. You can also run your fingers over them, and if one feels wrong…again, don’t use it.
The second check is to free-spin the cylinder. If your revolver has a hammer, thumb it back until the revolver spins freely; if it does, you’re GTG; if it hangs up…problem.
If you have a hammerless…it’s a little more difficult. Point the revolver on a safe direction/at a safe backstop (I have a 5gal bucket of sand), and slowly pull the trigger to the point of the cylinder spinning freely; give it a rotation or two to make sure it’s all good, and let off the trigger.
Short of a catastrophic mechanical failure, you should be good to go.