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People for years hunted squirrel with .22 long rifles and they weight 40 grains a .17 grain would be much less than it. Plus also think about a piece of hail falling to earth which a lot of times weights much more than 17 grains. Although it's larger diameter may slow it down. But if the bullet only arched and came down it could have a lot more speed than just falling from the sky. There is some smart people on here someone will have a calculation!