I just can't seem to get the right chemistry in a shoot-off when we shoot games. I normally shoot 1 1/8 oz loads of #8's or 7 1/2's at 1145 fps to get to the shoot-off, then I switch to 1 1/4 of #7's or #6's at 1300 fps for the shoot-off. Normally, we stand about 37 yds back (I stepped it off to be about 10 yds behind the 27 yd mark), I don't know if I'm under the birds or over them at that range? I'm just not very consistent from back there and I'm not sure what the problem is. Any helpful suggestions??