I very recently acquired a remington 597 in 22lr and i did a shortened version of a break in process on it and everything went fine. I put about 60 more rounds through it and cleaned it with hops 9 then brush then dry patch. Everything was fine. I put about 20 more rounds through it and cleaned it the same way (im anal about my guns being clean... i will clean them because they havent been cleaned in a week or two) but this time when i pulled the brush out long metal shavings (about 3/8 inch long) came out. They where very pliable so i suspected they where lead but i wasn't certain. I examined the barrel to the best of my ability and everything looked fine. Shiny as a mirror. I was just wondering if this is something i should be concerned about and do i have anything to worry about with using a brush to clean my .22? Also, I was shooting remington bulk and then put 10 cci stingers through it when the shavings where found. Another question, my brother says that when you wash your hands after shooting guns you are supposed to use cold water and NOT hot water... Is that true? and why?