I'm cooking up some arrows using the 3 Rivers calculator and when selecting a string, they have b50 or FF in various configurations. I'm using a BW PSAX 49@28 62". I selected a 14 strand FF as my string and worked up a nice FOC arrow, and it's very close to my heavier BW longbow arrows, only an inch longer. Am I good or should I select a different string?
I don't use a computer at all, just an iPad, so operating system compatibility issues arise with the spine calculators I've used in the past.
Stick with the FF string.