Re thread 8. The hammer CANNOT be pushed forwards unless it is cocked, hammer goes forwards, finger still holding the trigger rearwards THEN press the hammer forwards using your other hand - or press it forwards on the edge of the bench as we used to do in order to test Firing pin protrusion.
Here's the tests for the mainspring weights. Hammer in the fired (fully forwards position) Weight required to start to move hammer rearwards = 3 to 3.5lbs
Trigger and action at rest position. Barrel held horizontally in leather clad vice jaws. Trigger tester horizontal. Pressure required to complete a complete double action pull-off = 13 to 15 lbs.
A slip gauge .070" must NOT pass across/between the face of the shield and the cylinder. No force must be used for this test. During this test, there must be a gap of between .002" and .018" between the face of the barrel and the cylinder.
I'm sure that I have gone through all this/these tests before!
The old revolvers are really forgiving pistols. MKind you, they were a nightmare to me!
The tip of your firing pin is a bit misshaped but should still fire a cartridge. Any decent blacksmith should be able to anneal, harden and then temper your old mainspring. We used to make them when we were apprentices. We had to leave them up tight in the vice overnight. Mine always failed, so I'm not your man!