The result of your conversion between grain/ounce [US] and water [20°C] appears here
To convert between Grain/ounce [US] and Water [20°C] you have to do the following:
First divide ((0.45359237/16)*(192/175)/480)/(0.0037854118/128) / 998.2 = 0.00219506
Then multiply the amount of Grain/ounce [US] you want to convert to Water [20°C], use the chart below to guide you.
Symbol: gr/oz
No description
Symbol: water
No description