A fine soul sent me an email today making me aware of an interesting drilling:
http://www.stevebarnettfineguns.com/frm_inventory1.htm (tap Drillings/Combo)

From what I can recall, Henry Voght was closer to a used car salesman than a master gunsmith, but I could be mistaken.




The following are re-post for side by side comparison:


m-4's Heinrich Scherping sidelock


Heinrich Scherping in above post.



Merkel drilling but I don't recall right off where this pic originated.





Kind Regards,

Raimey
rse