I've had loads of Vulcan of every variant.. Probably my most favourite all time gun... I now only have a mk3 left.
I would like to add that I think the 'open breech' design is superior to the closed design of most break barrels. It makes it easier to load, and easier to identify and replace damaged breech seals. The trigger on all Vulcan and Victor can easily be improved by using a weaker spring in the trigger - with a little searching, a simple click pen spring does the job. This improves the trigger no end. Also a note to anyone wanting to spruce up a Vulcan variant - get yourself an Aussie red parachute seal! These are a great improvement over the PTFE ring and give a much softer shot cycle.