We used to shoot farm cats when I was a young man. Bunny season was over 28th of February and the woodchucks weren't up until mid April, so nothing else to shoot.
The Ontario game regs said "It is the duty of all licensed hunters to eradicate any domestic carnivore found more than 500yards from an out-building".
We used to drive the concession roads in the country and shoot all cats we found in the fields. We used semi-auto .22's & longer range shooting was not a problem. I'm sure some of them were at or close to 200yards from us.
Warren, my hunting buddy and farmer, used to maintain 17 cats on his farm. If there were more than that, they would start hunting away from the barn, thus he maintained that number and allowed no more.
He was loathe to allow cats hunting anything other than mice and/or rats in his own barn.
There was not a feral cat problem in South Western Ontario - could be now, though - I've been gone for many decades.