Life IS too short.
On a properly timed double action revolver, try pulling the trigger very sloooooly and watch/listen to the bolt.
The bolt will be pulled down from the cylinder recess, and at some time before the hammer is released, the bolt will spring back up.
When this happens depends on the design and trigger contact point on the bolt, bolt return spring and fit.
Some will spring back to contact the cylinder earlier than others. Some will be early in the rotation, some in the channel leading to the locking recess. The channel is seldom machined or polished as well as the rest of the cylinder.
Proper timing is when the hand continues to rotate the cylinder, with the bolt riding on the cylinder or in the channel, locking the cylinder into battery prior to hammer fall. You may notice the bolt will drop into some chamber recesses earlier or later than others due to the hand, cylinder ratchet geometry for that chamber. Short hands or worn/deformed ratchets are common on older guns which allows the hammer to fall before the chamber is locked into position.
Or said another way, the bolt will drop into the cylinder alignment recess (stopping and locking the cylinder rotation) sometime before the hammer is released from the double action sear. Geometry usually means the hammer will release earlier when cocking double action as opposed to catching the single action sear when thumb cocking in the cylinder rotation, bolt locking sequence. If lockup is out of time single action, it will be more so double action.
In addition to what others have said about indexing the cylinder prior to closing I add this, to eliminate a drag line on collectible guns you can help alleviate drag lines by cocking the gun with either the hammer or trigger until the bolt retracts from the cylinder recess. Then using your other hand to manually index the cylinder into alignment with the barrel. Continue cocking the gun, and when the bolt is released from the trigger, it will fall into the cylinder recess with no rotational drag.
Another way is to make sure the bolt itself has no burrs or sharp edges that will cut into the bluing during rotation. While not full proof, it does help. Disassembly and careful polishing of the bolt is required.
One thing that drives me nuts is when someone will cock, either single or double action, the gun as fast as they can like they are trying to win a race. The rotational momentum of the cylinder that the bolt has to stop is greatly increased and just abuses the gun. I can get a gun into battery with less than half the trigger pull (distance) using just the cylinder rotational momentum if I wanted to.
Drag lines don't bother me. "Un-turned" guns are a myth as they all have been turned at one point or another.
Finely fitted parts don't take abuse well, but when used for their intended purposes, will last many lifetimes.
Like my dad always said, "You don't have to abuse it to use it". Life is too short not to enjoy the good stuff yourself.