Depends on your ability to monitor and gather data. I've seen people on this size of dose shoot green before. You could always work up to it by lowering the point at which you shoot a reduced dose, or shoot a smaller reduction, and see how that goes.Also, if he's low 100s or just under 100, would it be safe to give his full dose? So far when this has occurred, this is when I've given the 1/2 - 2/3 dose for my own comfort level.