Brilliant work sir ... jsut noticed in your vids and comments - going back thru - that you crafted your own drop tube mount - this part :
Could you please expand upon what you made there - you mention it has threads? Would you be willing to share .stl or dimension or direction on some of hte design goals - why u made it vs whats currently in the Open project file options ? Im looking for a method to quick change a tube mount for rifle and pistol calibers ... for loading - nose up vs. sizing.