... The Swede haddiscovered the rifling of his box... 
Edgar Rice Burroughs 「The Son of Tarzan」
...Wild creepers flaunt their red and gold from the treetops, and thebumblebees and humming-birds make common cause in rifling thehoney-laden trumpets...
Gene Stratton-Porter 「The Song of the Cardinal」
...These guide therocket much as rifling in a gun barrel guides a bullet...
Various 「Astounding Stories, March, 1931」
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