Hi QH's Paw
Yes it's legal to hunt whit motor, but they most only sail whit 5 knot a hour, and only on saltwater.
The cartridges there are used are steel, we can't use lead legally, but the steel today are just as God.
My own favorit hunting duck and geese hunting at the freshwater shore, and from my layout on the saltwater after golden eyes and teals, 2 -3 trips whit motor after eider and scooters.
I also have my 6,5x55 swedish that i juse for roedeer, red deer, fallow deer, wildboar and fox.