I did some measuring today with Pyrodex RS and heres the Weighed Powder charges.
50gr (Volume) = 37.6 Grains by WEIGHT.
60gr (Volume) = 43.6 Grains by WEIGHT.
70gr (Volume) = 49 Grains by WEIGHT.
80gr (Volume) = 56.2 Grains by WEIGHT.
90gr (Volume) = 62.8 Grains by WEIGHT.
100gr (Volume) = 68.4 Grains by WEIGHT.
110gr (Volume) = 75.8 Grains by WEIGHT.
120gr (Volume) = 82.6 Grains by WEIGHT.
50gr (Volume) = 37.6 Grains by WEIGHT.
60gr (Volume) = 43.6 Grains by WEIGHT.
70gr (Volume) = 49 Grains by WEIGHT.
80gr (Volume) = 56.2 Grains by WEIGHT.
90gr (Volume) = 62.8 Grains by WEIGHT.
100gr (Volume) = 68.4 Grains by WEIGHT.
110gr (Volume) = 75.8 Grains by WEIGHT.
120gr (Volume) = 82.6 Grains by WEIGHT.