What if I don't have a Ouija board? Maybe they sell them on Amazon.
I was just now testing something out. I'm running out of salt nic, so I decided to revisit freebase. I haven't used freebase at all since I went up from 15mg to eventually 25mg. I used 9ml of 6mg commercial ejuice (as a flavoring) and 16ml 25mg VG nic base, for about 19mg. I mix ejuice in 30ml graduated bottles. Since I only use enough flavoring to cover up the taste of the cotton (0.25%-0.50%), steeping is kind of irrelevant.
The commercial ejuice--Dewwy by Eliquid Depot--was also 70/30 VG/PG. I haven't had PG in my juice since I first ditched the commercial ejuice. This juice has so much flavoring in it that it's seriously present even 2/3 diluted. I'm vaping it now out of a Kanger Subtank Mini--1.2 ohms at 11W.
So there are two possible sources of increased harshness here. The PG, and the freebase nic. I can tell the difference easily, since I'm such a fan of smooth, cool vapes.
The PG definitely makes its presence felt. Not enough to really add harshness so much as to erode smoothness. I don't think the freebase is a big factor there. Overall, it's not as smooth as my usual max VG/salt nic, but it's not badly harsh, either.
The freebase nic is definitely having an effect, though. It "stings" your mouth a lot more than salt nic does.