On my Reo's I build around .5, on my dual 18650 Cam-M squonker I build around .4. The dual 18650 hit's hard but I like that on that mod, my Reo's are my easy carry during the day mods that I prefer at .5. Either mods give me great battery life, around 5-6 mls before I pull the battery on my Reo's & at least 10 mls before I change batteries on the Cam-M. I usually swap my batteries out around 3.5v.
