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370 grains is about one-twenty-fifth as heavy as a Basketball
In other words, it's 0.038441558442 times the weight of a Basketball, and the weight of a Basketball is 26.013513513 times that amount.
(NBA official ball standards, Size 7)
A regulation NBA basketball, manufactured by Spalding, is known as a Size 7 ball and weighs 9,625 grains. These balls have 4,118 pebbles each with a diameter of 2.5 mm
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