I have heard from several sources that the No. 5 jungle carbines have a wandering zero. However I have also heard that this was a false claim made by soldiers that did not want to be armed with a bolt action rifle. So does the No. 5 have the wandering zero problem or not?? Come to think of it I have also heard that the term "jungle" carbine is incorrect. This has been driving me nuts and I'd like to get my facts straight, thanks everybody.