Longbow...1 1/8oz of 7 1/2 shot by volume, in your powder measure is 90gr...1 1/2oz is 113gr.
#6 shot.....1 oz = 72 gr., 1 1/4oz =90 gr., 1 1/2oz = 113gr
#4 shot......1 1/4oz =95 gr., 1 1/2oz = 117gr, 1 3/4oz = 125 gr.
this will get ya close, hope it helps....at least you'll have a good guess at what your load is once you get one patterned good.