I am comfortable with using 12ft/lbs air rifles, and so is the the Law, for taking the designated critters within the farmyard.
I am comfortable being a hunter and hold great respect for my quarry. I am realistic that its not a perfect world, and even with great diligence not ever outcome is always perfect. I strive to be as humane as practicably possible.
I realise its not for everyone, and some hold other views.
Humans have always hunted and taken a bounty from what nature provides. Its the natural way of things and those that wish to object to that I find weird; well a minority and a very alternative stand point. They are free to hold those views, but please can we have a bit less of the erroneous "morality high ground" baloney. If we were just vegetarians we wouldn't tolerate herbivores as they would be competing for our cereals. As it is modern farming uses pesticides on an industrial scale to provide our daily bread; just look at the bird population crash for the evidence.
I think hunters are more aware of the human impact on the natural world than most. Far more than those who live within the metropolitan cities and have no clue other than what they see on their TV's when a nature programme happens to be the entertainment that night.
I've put my view across plenty of times.
For 12ft/lbs air rifle hunting then shot placement is everything. What effective range is dependant on the skill of the shooter. The final decision is with the person pulling the trigger.
In truth shot placement is always the most important part, that and using enough "gun" to do the business. Or we could always just nuke them