I dug my Marlin 881 out today to cycle the bolt a few times to limber it up and get it ready for skunk-mageddon. I stumbled across the midway usa web site. I looked into the various model breakdowns and the listed alot of parts for the 880 & 882 rifles, but, only a stock for the 881. Whats the deal with the 881's? Are they not as loved as the other 2? What's the difference between the 3 models? Also, where can I get some CCI CB 22LR rounds? Thanks.