The result of your conversion between thermie and grain/ounce [UK] appears here
To convert between Thermie and Grain/ounce [UK] you have to do the following:
First divide 4185800 / ((0.45359237/16)*(192/175)/480)/(0.00454609/160) = 1835391.93811285
Then multiply the amount of Thermie you want to convert to Grain/ounce [UK], use the chart below to guide you.
Symbol: th
No description
Symbol: gr/oz
No description