"Interesting thought...but...wait...my Darton Fireforce stuck one arrow into the back of the previous arrow from about 17 yards.... is that accurate enough."
That's an interesting thought too. I've done it a total of 4 times now..with 2 Excals and a Parker.
One of them at 50 yards. Thought it was neat at first. Now consider it just 'spit' happens.
Don't shoot to the same point of aim any longer tho. As someone else hereabouts says on the signature: 'Robinhoods are not big thing, just a mistake.'