One thing that alwaysamuses me about the claimed"efficiency" numbers is this: Different arrow spines absorb different amounts of energy, and they flex differently with every different force-draw curve.So unless you're 100% certain that the tester took the time to find an arrow that worked best with the bow... Then the "efficiency" numbers that he's spitting out - they aren't exactly reflecting that bow's actual maximum efficiency.

That wouldn't matter in general terms - but when you're splitting hairs, saying that Bow X is more efficient than Bow Y, because it is .5% more "efficient" - thearrow of choicecould be skewing the results.

Just thought thiswhole conversation was incomplete withoutat least mentioning that the ARROW has a lot to do with a bow'sstated "efficiency."