I suspect that group with all the slings and cheekpieces is a European photo. Look at the size of the rabbits - appear to be more hare than cottontail to me.
Big "Jacks",...shot one 13 lbs couple of years ago here not too far from home.
There is a gang of Hungarians that have a hunt club here that chase those things in snow shoes when the weather turns bitter. I was invited to go along a couple of times,...they shoot 4 or 5 every time they're out and they look just like that in the pictures, slings and all!.... only difference is they're wearing orange
CJ