408

Well, i have three calculator methods (one of which uses a constant, so it can be adjusted to match a known good 1/8 and 1/4 pass), a chart on my phone, (referenced above) and the wallace calculator.
I havent tried the one you mention, but i will.
None of the five i have will give the same answer. Just like "a man with one watch knows what time it is, a man with two isnt sure". LOL.