I was coming here to ask the same question after lurking around a few days and finally buying the pistol I'd been eyeballing today. I'm not meaning to hijack a thread, but I have the same question.
I purchased a brand new 629-6 6" barrel. It has not yet been fired, but after getting it, I noticed some rotational cylinder play. Granted it's not much, but enough to make me ask the question of is this normal.
After reading the above replies, I am still a little concerned because the cylinder does not seem to tighen up when cocked.
How much play is to be expected on a new gun, both cocked and uncocked?
When you're checking play, it should be in full lock.
Cock the revolver. Then, with your thumb on the hammer, pull the trigger and continue to hold it back. Lower the hammer with your thumb.
That is full lock. It's also when you would check for any play in the cylinder. Even in full lock, you may get some play. That's normal. But.. it shouldn't be much. It's very hard to convey how much is normal in a forum setting. But, a little play is ok.
I'm with Carl, you check the lock up with the trigger pressed and held fully to the rear. This is the point that the firing pin will strike the cap. Also this is important, add several fired cases to the cylinder while you check it. Sometimes the extractor has a bit of wobble and the cases will tighten it up (just like shooting it, for real). Inspect all 6 positions!
You still may have a slight amount of movement , which is normal.