Not relevant to original post, but these pictures are so good; Note in the pic of NE H with hammers dropped. Pic is nearly square across face & no firing pins protrude. The main springs have bottomed out against there pocket in the frame & hammer is now "Loose". Inertia carries it on to fire the primer, but it is not held locked into the indent. Not really rebounding, but serves virtually the same purpose as far as opening the gun is concerned. Note also the distance the sear engages the hammer from it's axle. Extremely good leverage here. Since purchasing my first Lefever some 40 yrs ago I have never ceased to be amazed by the innovativeness of the Lefever design.
Not to take anything away from the Lefever design but in the pics of the NE H, the internals may be square to the eye but it looks to me that the breech face is canted back. In the picture of the left side with the hammer dropped I can see the end of the pin.
Rob
