If travelling through the channel tunnel declare your air weapons at check-in. They will put a sticker on your windscreen and you will be selected for a security check by Eurotunnel staff. They will ask to see a gun license so explain it is an air weapon and does not require one. If they doubt what you are saying they will call the Channel Tunnel Policing Unit (Kent Police)who will attend and varify your claim. If you choose not to declare your gun at check-in, you run the gauntlet of maybe being stopped for a security check, and if the gun is found you will be asked why you did not declare, and even though your possession is legal you will probably be banned from taking the gun through the tunnel as you are a security risk. <img src="http://jsramsbottom.co.uk/bbs/e/icon_eek.gif" alt="Eek" width="15" height="15"><!--graemlin:-->
Don't worry about the French police. They don't give a damn! <img src="http://jsramsbottom.co.uk/bbs/e/icon_biggrin.gif" alt="Big Grin" width="15" height="15"><!--graemlin:-->