rimfire for fox
I have no idea of the rules and regs in New Zealand but have to say that was pretty bloody awfull. I feel that anyone who does what was shown in that vid: needs a kick up the ass, followed swiftly by his HMR.
As far as foxes and rimfires are concerned, I probably shoot as many as most and have done for more years than I care to remember. most firearms are more than capable of taking out a fox, skin one out, they ain't very big! However unless you know in advance how far out you will be shooting it is better to be equipped for all eventualities. Rimfires are fine but limited. The little HMR is good but I would have to say 100 yards is top whack on a fox with one. .22lr much less than that. If you are foxing stick to 223 or 243 then you know you have the correct tool for the job, whatever the range.
I know how keepers feel about foxes, I hate them! but even they deserve to be killed as humanely as possible, as does all quarry. My 243WSSM will take out a fox at all ranges out to my capabilities, and if hit with an 85gr hollow point almost anywhere, it will be killed. Not glamorous but effective, too often rimmies will injure and maim. in the days when I skinned hundreds of foxes every year it was common to find wounds, healed and otherwise from 22 rimfires but I dont ever remember finding one with a centrefire wound that had healed. IMO rimfires are for rabbits etc; and the odd close range charlie, but not much else.