The result of your conversion between grain/cubic inch and grain/gallon [US] appears here
To convert between Grain/cubic Inch and Grain/gallon [US] you have to do the following:
First divide ((0.45359237/16)*(192/175)/480)/(0.0037854118/231) / ((0.45359237/16)*(192/175)/480)/0.0037854118 = 231.
Then multiply the amount of Grain/cubic Inch you want to convert to Grain/gallon [US], use the chart below to guide you.
Symbol:
No description
Symbol:
No description