I came across some Sweetlands a while back that were too heavy for me so I traded them. They were 30 1/2 inches long, 11/32 with a 10-inch taper to 5/16. My spine tester is only accurate to about 100#, and these were heavier than that. Raw shafts weighed 850 grains. Sealed, fletehed with a standard weight head, they would make into 1,000 grain arrows. Bill Negley writes about using forgewoods with these dimensions in his book, Archer in Africa. Wish I had kept them.
Mostly, I shoot arrows in the 600-650 grain range, though I did use 725 grain arrows for an Alaskan Moose I killed a while back.