Jcook, if it is pure juice, I would say you need a 1 to 1 ratio. You may find the wine a little thin from juice without the berries and may consider buying dried blueberries from Sam's Club (they have them here) and add them in primary fermentation. Sorry I don't have recipe, but I would start by taking the SG of the juice as bottled and go from there. From what I have seen on the forum, most people start blueberry around SG 1.085 so you may have to add either simple syrup to raise the SG or water to lower it before you get started.
Look into the posts under fruit wines and search for "blueberry wine" and you might find a recipe.