Thanks for the replies fellas. My friend is corcerned that if the Accubonds shoot that much lower at 100 yards than the Sirocco's do. He thinks they don't shoot as flat and there will be even more noticeable drop at longer ranges with the Accubonds. We do plan to take the chrono. out within the week and compare the velocities of the two. I think he is making more out of it than need be!