Correct me if I'm wrong, but I'm not aware of waxed livery arrows including pine rosin, although doubtlessly rosin glue was used in some types of medieval arrows. I believe the mixture is copper verdigris, wax and suet. I've tried both and found that both recipes have comparable durability; the wax and suet isn't as hard but it's less brittle. Though admittedly the pine resin I used may not have been the best quality.