Cleaning someone's deer rifle

[Pre-64]

Heres a good one that I have heard more than once, "The bore is as clean as it was after the first shot". It took me the better part of 2 years to convince my buddy that rifles are not self cleaning ovens. He held the idea that the next bullet in line would magicaly clean the mess from the privious shot fired. After missing several Groundhogs one season he gave me a 22-250 to determine what was wrong with it. You could imagine what the first fist full of patches soaked with Barnes CR-10 looked like. Well needless to say the rifle was fine and shot great after a serious cleaning. Where do people get thse ideas from?