I go back and forth between the build in the pics dual coils each coil is 4 parallel strands of 28g and dual coil 6 parallel strands of 30g each coil
I use 3\32 diameter and 4 wraps. and place the coil in the middle line on the Mutation X. This one is 5 wraps i was playing with it and figured since its going on a VV box to raise the ohms a bit to see what it does. I run it at 3.3v it gets down, no warm up\cool off, and is easy to do complete lung filled pulls and not chock as its not that hot feeling. I believe it came out to .15 with the 5 wraps. With 4 wraps it comes out to .1 with short legs and .15 with longer legs