Update:
So I’ve been shooting 4 x 2-1/4″ fletching for the last year or so, and generally been pretty happy with the results.
But just out of curiosity, I got out an old 3 x 4″ fletch, cap-wrapped arrow that I had, and decided to compare FOC on both of them, all other things (point weight, etc) being equal:
FOC on the top arrow: 23.6%
FOC on the bottom arrow: 25.4%
I was a little surprised at how close they were, so I triple-checked my measurement, and yup – less than 2% difference. I suspect that removing the wrap on the top arrow would put them even closer.
So with a minimal difference in FOC, the question I really need to answer is – which one provides the most flight stability in a variety of conditions, with a broadhead?
The experiments continue in the quest for my ‘perfect’ arrow, but the process sure is fun. And at least it’s based on first-hand experience, rather than assumptions…:wink: