I completed Resident Evil 6 on normal mode, all 4 chapters (pretty poorly, I might add) and am now going back through the game to achieve S rank on all chapters. When I went to start a new game it asked if I wanted to start a new game using previous weapons. Having pressed 'yes', I'm now on Leon's chapter 1 and only have the Wingshooter and knife.. I've also bought the infinite shotgun skill but have no shotgun to use it :( any ideas?
Actually, that is not what it says. If you read it carefully then you will find out that you actually need to press "No" to start with all your previous weapons (I cannot remember the exact text at the moment).
I admit I found the text to be a bit misleading too, so I can see how it could easily be overlooked.
It's also worth mentioning that replaying the campaign with the "other" character, does not allow use of weapons collected from the first playthrough, ie. you have to collect each characters weapons individually.