26g 6 wraps around a 3mm bit dual coil comes out to about 0.58ish ohms. Do 5 wraps instead and it will be closer to 0.50.
I recently did a twisted 26g dual coil in my tugboat v2 2.5mm id 5/6 wraps, comes out to 0.26 and vapes like a beast, killer flavor.
These
coils barley fit into the post holes but it was worth it.