Wingnut used to have some reading material on the Dryad sight, but it seems to be gone right at the moment with the ownership change our website update or something. Anyways, as I remember it, a one piece is more efficient than a 3 piece and a bolt down is more efficient than an ilf and that's assuming every thing else is equal, I think a 2 piece bow bolt probably or socket connection is right there with the one piece. Wanted to link the literature but couldn't, I highly doubt very many of us can shoot the difference in efficiency, but most of us can shoot the difference in mass a 3 piece has. But at hunting distance's a one piece with a quiver works pretty handy and I can attest that at 10K plus feet, that lighter bow is appreciated!