Ok so next question. Can you describe tight vs not tight.?
What would be nice is say i take an 8 second draw but wanted to cut that down to 4 seconds but have the same throat hit and vapor volume? Is that accomplished by the hole size in the cap?
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Tight to me = trying to drink a Wendy's frosty thru a straw.
But I will say that when I first tried a 1/16" airhole I hated it. It took me like a day to get used to a looser draw. After that I could never go back. I subsequently drill all my RBAs to 1/16 and sometimes botch them so their even a little larger.
I don't know what effect it has on V or TH I just do it for the draw