In this situation I wouldn't be worried about if the round will kill the Fox, rather where it could end up. For a couple of years I was too scared to shoot my .22lr on any of my shoots and just used it at the range. It's frightening how many bullets ricochet even on ground I would normally consider ok! I don't know the site but by the sound of the size of it I'd be more keen to use an air rifle on the bunnies and the .22lr on Foxes baited to a suitable target point. Compost heaps, ton sacks of sand, a wall of railway sleepers - all will stop the bullet in it's tracks and that's what you need to be 100% certain of here. In a field a zinger will fall to earth and do no harm but in an estate it could be a complete disaster!
Back on topic I've shot many Foxes in urban gardens using the above methods. Yes it will kill them cleanly if you use it properly but there is little room for error and ranges need to be close. If they are urban Foxes consider a cage trap. They're seriously good when it comes to dumb Foxes that are used to human scent and the unnatural food they leave about the place!
Back on topic I've shot many Foxes in urban gardens using the above methods. Yes it will kill them cleanly if you use it properly but there is little room for error and ranges need to be close. If they are urban Foxes consider a cage trap. They're seriously good when it comes to dumb Foxes that are used to human scent and the unnatural food they leave about the place!