Sounds like a short and you were just reading mod resistance.I actually had a 0.007 coil last week, but not really on purpose: I only had NI200 30Ga wire to build a coil for TC vaping, but the posts of my rta don’t hold 30Ga wire, it just slips out. Plus they’re really close together, you can only fit 4-5 wraps. So I wound a Clapton wire out of two pieces of NI200 30Ga, that way I could screw it onto the posts, but obviously the resistance was even lower than with a simple NI200 coil = 0.007.
I had a 4 strand parallel 26ga Ni200 coil, shooting for 0.01Ω as that was as low as the display would read...