The result of your conversion between grain/ounce [UK] and water [4°C] appears here
To convert between Grain/ounce [UK] and Water [4°C] you have to do the following:
First divide ((0.45359237/16)*(192/175)/480)/(0.00454609/160) / 1000 = 0.0022806
Then multiply the amount of Grain/ounce [UK] you want to convert to Water [4°C], use the chart below to guide you.
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