The result of your conversion between newton meter and grain/gallon [UK] appears here
To convert between Newton Meter and Grain/gallon [UK] you have to do the following:
First divide 1 / ((0.45359237/16)*(192/175)/480)/0.00454609 = 70.15688998
Then multiply the amount of Newton Meter you want to convert to Grain/gallon [UK], use the chart below to guide you.
Symbol: Nm
No description
Symbol: gr/gal
No description