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42,000,000 grains is about 400 times as heavy as a Bowling Ball
In other words, the weight of a Bowling Ball is 0.0025 times that amount.
(most common selection among male bowlers)
With an allowable range of 77,000 grains, the most-preferred bowling ball weight among adult, male bowlers is 105,000 grains. Because regulation balls measure the same diameter irrespective of their weight, ball density varies by size and balls weighing less than about 77,161.79180 grains will float in water.
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