The Steiger guide has Copperhead as: "The taller you are the easier, originally rated 5.8 by some 6+ footers"
I managed to lead through the top bulge by liebacking and stemming on the outside of the crack..This is apparently only 10-.. The actual offwidth looked impossible..Steiger has it as 10+..
I didn't actually lead the whole route, only those last moves after my much stronger partner led the rest of the route.