[aerohead]

I've edited the 1st permalink and added a drag table for machine gun barrel fairings morphed together from two in Sighard Hoerner's 1951 book,'Aerodynamic Drag'.
It's 2-D flow,although you'll easily see what gaps and shortcuts do,compared to 'ideal' teardrop forms.
The Cd 0.08 form is an instance where frontal area has been increased and results in overall lower drag.