The result of your conversion between grain/gallon [US] and ounce/cubic foot appears here
To convert between Grain/gallon [US] and Ounce/cubic Foot you have to do the following:
First divide ((0.45359237/16)*(192/175)/480)/0.0037854118 / (0.45359237/16)/((0.0037854118/231)*1728) = 0.01709833
Then multiply the amount of Grain/gallon [US] you want to convert to Ounce/cubic Foot, use the chart below to guide you.
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