
I don't have the luxury of hunting in a rifle area like where I grew up.
If a rifle is allowed, as a kid I started with a .257 roberts and had no kick to worry about. Later I went to a .270, but must admit although I loved the flat shooting out as far as I could see, it did kick.
A kid just starting out will likely want something light and small. The break action .243 looks great although I've never shot one.
My personal recommendation is a Marlin lever action 30-30. With their micro-groove rifling I was able to drop a running fox at just over 100 yards. Never had it fail me on any deer at any range. And learning to work the lever action without removing the gun from my shoulder I can stay close on the target for a second or third shot faster than the guy with the semi-auto 270 or 20-06 because my 30-30 recoil is not taking me more than an inch or 2 off the target to ready for another shot. With the 270 I had to bring the barrel back down 18 inches to aim for a followup.
Once a young hunter gets confident shooting a Marlin or Winchester 30-30
it will be hard to convince him to drag something else into the woods. Unless you're after mule deer or antelope in open country, he'll never find range to be an issue. The hammer safety is great for a beginning hunter as there is never any doubt when he has put the gun back in the safety position.
My eyes focus forward like all predators so I know I was born to hunt.