Geez I have no official data.. But for a fixed sight,Copper Johns are about as bright as they can be, also I had an HHA and it was bright as could be also, it was a 1 pin movable sight.
Buying the optional light for either of these was a waste of money, you could see the pins well after you could possibly shoot at a deer!
The Vital Bow gear sights are pretty hard to beat!
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Big River Longbow 66" 52# @ 28"
Big River Longbow 66" 47# @ 28"
Big River Longbow 62" 52# @ 28"
Big River Recurve 56" 52# @ 28"
NewWood Longbow 58" 45# @ 28"
Brightest Pins?
