thirty-thirty

thir·ty-thir·ty

(thûr′tē-thûr′tē)
n.
A rifle that fires a .30-caliber cartridge with a 30-grain powder charge.
References in classic literature ?
He did not know, and he was never to know, that one, known to men as Harley Kennan, but known as "Husband-Man" by the woman he called "Wife-Woman," who owned the three-topmast schooner yacht Ariel, had saved his life by sending a thirty-thirty Marlin bullet through the base of a shark's fin.
Young Wickson put his hands up first, then turned to confront Biedenbach, who held a thirty-thirty automatic rifle on him.
Thirty-Thirty is his trusted partner against crime - a horse that can transform into a talking, human-like creative who can fight alongside BraveStarr in their many battles against the outlaws.