normaly size 00 empty capsule hold bout 735mg,but this weight will change little ,it depend on the density of powder
if the density is 0.8g/cc ,each size 00 empty capsule can hold 760mg
if 1g/cc,each size 00 empty capsule can hold 950mg
if 1.2g/cc,each size 00 empty capsule can hold 1140mg