The VTC4 is "NOT" a max 30amp battery, it can be pulsed that high yes, but it's "Continuous Discharge Rate (CDR) maximum" is 23amps. So build accordingly to those 23amps not the 30amps. 24awg core claptons in parallel at 5wraps on a 3mm, knowing just standard 24awg kanthal A1 wire in parallel on that 3mm at 5wraps would be pushing closer to 0.10ohms, not 0.70ohms, I believe that 0.07 reading is right in the more accurate reading. I'd suggest shedding a wire on each coil, just 2 single strands of that clapton wire to boost up your Ohms, and add 2 more wraps to each coil, that should push you over 0.20 ohms into the 0.25 to 0.30ohm range. Never build on a single battery mech below 0.25ohms, even with 30amp batteries, this gives safety head room, and, padding as those batteries age, their CDR will decrease over time as well due to loss of Mah, so always build to a maximum of 50% the CDR your batteries can handle (20amp batteries that would be 10amps, 30amp batteries that would be about 15amps) to account for this aging over time as well.
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Follow up, similar topic, but a lot of this was discussed here as well, worth perusing over for your own question here
Advice for a new mech tube user
