I've got a 4566, and took it out to the range two weekends ago and tossed about 200 rounds down range. At the time, double action shooting was working properly, although with fresh magazines I'd shoot the first round by pre-cocking the hammer to shoot single action(?), so I wasn't shooting double action on the first shot. (Sorry if the terminology is wrong here, still kind of new to shooting).
Anyhow, playing with my snap caps today and working on trigger pull I noticed double action wasn't working at all. See below:
These images are here just to show the gun was loaded with a snap cap and a snap cap only.
As you can see, I barely pull the trigger back but it doesn't engage the hammer like it normally would.
This isn't normal, is it? Previously if I pulled the trigger on the first round without first pre-cocking the pistol it'd engage the hammer. Now it doesn't.
How can I fix this?
Thanks for the help / any info you can give me.