The result of your conversion between grain/gallon [US] and pound/cubic yard appears here
To convert between Grain/gallon [US] and Pound/cubic Yard you have to do the following:
First divide ((0.45359237/16)*(192/175)/480)/0.0037854118 / 0.45359237/((0.0037854118/231)*1728*27) = 0.02885343
Then multiply the amount of Grain/gallon [US] you want to convert to Pound/cubic Yard, use the chart below to guide you.
Symbol: gr/gal
No description
Symbol: lb/yd³
No description