Duh...how many grains to a pound???

1 pound (avoirdupois)=16ounces (avoirdupois)=7000grains =453.59grams

1 pound (apothecary)=13.166 ounces (avoirdupois)=5760 grains=373.24 grams

1pound british standard = avoirdupois standard measure pound
this help explain the different amounts on conversion?
 
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