I noticed that the timing is slightly off on my Colt Army Special (original name of the Colt Official Police). It's present on all chambers, not just one. Here's what I've noticed about it.
1. If shooting SA, slowly and softly cocking the hammer will cause the cylinder to not lock. It's just a hair off. A slight rotation of the cylinder causes it to lock.
2. If shooting SA, cocking the hammer with some authority will cause the cylinder to align correctly and lock.
3. Dropping the hammer seems to knock the cylinder into alignment.
4. If shooting DA, slowly and carefully pulling the trigger can cause the cylinder to not go completely into alignment, until the hammer drops.
When I say it's a hair off, I mean that its right on the very edge of locking into alignment. You can see that it's off, but any jarring of the gun seems to cause it to finish rotating. Is this something I need to be worried about, or is it just a quirk to be expected on a 102 year old gun? Any thoughts on how to fix it?