Salukipv1
You left out the 7mm-08,.270 WSM and a whole host of other WSM and Magnum Calibers?
Yes..it can be pretty confusing,I have found its best to think about getting several different Caliber choices,checking a recoil table to see how much felt-recoil a gun and grain bullet will deliver and ask around to see what others have choosen and are comfortable with...this is where it can get a little more confusing though!
I have also found that if a Person gets a Bolt-action Rifle You can tone down a Rifle a lot more by using the Remington "Managed Recoil" shells or You can Hand-load them lighter yourslef and its like having 2 different guns for an Adult and a Youth to shoot!