RE: 308 for moose
Not really! There are many people out there that can not shoot magnum cartriges accurately enough to reliably hit an animals vitals. But they can shoot 308 class cartriges very well. So if one can not handle the recoil of a hard kicking magnum then it would be much better for the animals and himself if he did not use a magnum. Like I said a bullet from one of the smaller cartriges through the lungs is a lot better than a 338 through the stomach.
Example: You have two people one 6' 2" tall and weight 250 pounds the other person a small framed lady at 5' 4" tall and weighs 110 pounds. The 6' 2" guy can shoot pretty much any magnum rifle out there accurately with out it bothering him. The lady can not handle the recoil of a 30-06 very well at all. Would you not let her hunt with you just because she can' t shoot a magnum class rifle or even worse would you make her use a magnum and risk wounding an animal because she is scared to shoot it?
Seemed pretty cut and dry to me.