RE: Excalibur mag tip
You've done well, grasshopper!! lol. Seriously, great job on explaining the strings. There used to be four!
Basically, a dacron string and stock Excal arrows gives the same fps as a FFF and heavier "Miller" arrows [431 gr]
I've talked w/ Danny more than a little, and one of the things he's told me is for competition shooting he uses the FFF on a Vixen or Phoenix.
Alot of new guys get concerned when their new dacron strings w/o hardly any twists start out well above the "high" brace height line. Nothing you can do but shoot them in, so to speak. I set all my new FFF's about 3/8 to 1/2" above that line as they stretch like crazy.