Update 2.
I purchased some SS 316L Alien 3 core coils:
- Core: 3 by 0.29mm ( 29 AWG )
- Shell: 1 by 0.1mm alien wrap
- 3mm coil inner diameter
I just did a build, 5 wraps, didn't space the coil and used a piece of organic Japanese cotton rather than the Cotton Bacom Prime. Coil came out at 0.29 Ohms. I'm not sure what cotton it is as the coil supplier put some in the box but it wicks like crazy. Even after priming the coil and cotton before putting the tank back on the deck, after filling with 2ml of e-liquid around half went as the cotton absorbed it. The flavour is fantastic now, even switching between Power mode and TC the flavour is the same. I will continue to use TC mode now as the battery lasts longer and the vape is constant rather than getting hotter with longer draws.