Is there a number stamped on the backside of the hammer? I have several spare hammers. Some are marked 1,2 or 3. Probably how they were purchased from the trades by makers. I think it tells the angle of the hammer toward the firing pins.
Some hammers hit the firing ping squarely, others at an angle depending on type of action/lock.
Can you post of photo of the action? Do you have a hammer screw?
Are you near NC?

Joe