If you want to take firearms/shotguns to another EU Country you require a European Firearms Pass. Both your firearms and shotguns are listed on the same EFP. All of your guns will be listed unless you instruct otherwise. Your European Firearms Pass will be valid until the date of whichever of your certificates expire first.

If you require a European Firearms Pass you have to write to the Firearms Licensing Department not less than 10 working days before your date of departure. There is no fee for this service.

Lots of info here:

http://www.shooters.co.uk/shootingeurope.htm

Jerry