A shot or shackle is 15 fathoms or 90 feet. A cable is 600 feet or 1/10 of a nautical mile. a British cable varies slightly.If we're going nautical; Shots
I don't have many miles on mine yet, and only speed signs and door openers, but my arrows react as I would expect.
I say this never having arrows before my R7 with 1.35, so take my observations for what they're worth