Thats a pretty low figure for hunting , the ones my mate from Netherlands has he has owned for over forty years which he used to hunt rabbits with ,it was him gave me the details including calibre of 5.4mm he even sent me photos and Protek are selling the same size shot of 5.4mm so are we talking of different rifles ?
first is link to the excellent rifle they have for sale on commision 3/4 of way down page ,second one shows h&n 5.4mm balls for Swedish rifles ?
http://www.proteksupplies.co.uk/page4.html
http://www.proteksupplies.co.uk/page11.html