Got a new Korth, a series 21xx. I noticed that I can pull the trigger without the cylinder or with the cylinder swung out.

Does it a) damage the gun and b) work in the later models?

I would ask Korth that question.

I did but not sure they would reply. It's from 1966.

Can you post a photo of the hammer face/firing pin and the frame where the hammer contacts it?

I suppose if there is not significant metal to metal contact without the cylinder in place it would be OK, but to me dry firing without it would not be helpful for practice due to the change in balance and weight.

__________________
Alan
SWCA LM 2023, SWHF 220

When in doubt don't risk damaging your new revolver.

That's true. I would simply try the trigger weight on the double action and lightly lower the hammer with my thumb. This is because my Korth in 22lr and I do not have any spare casings.

Why don't you obtain some .22 snap caps and eliminate any potential problems?