I just bought what I think is a mauser. It has the mauser action and is a pre war weapon. It is short (about a 18" barrel) and has a distinct taper in the barrel about half way. The barrel says it is 7.62 but that is all. I assume it is 308 win (7.62x51) but have heard of 7.62x39 and that the mauser was also available in 30-06 which would also be 7.62x?. Looking in my gun books it looks like a british type A but I think those are too rare to just stumble on. Any help would be appreciated. Stock has either been replaced or has been repaired as I don't feel it is in its original condition.