Magnumitis seems to be buzz word for compensation to practice and learn your rifle. If all you do prior is shoot whitetail under 100 yards, you're never going to be able to make a 400 yard shot with a plain duplex reticle.
If you get out and practice at various distance out to 1000 yards,you're going to learn your rifle. Pretty soon, that 400 yard shot will become a chip shot.
Practice, practice, practice....and know your ballistics.
"Practice" is a panacea for any rifle cartridge, including magnums.No more difficult than with a smaller cartridge, if you go about it intelligently.
And it surely is no trick to kill an elk at 400 yards with a standard duplex reticle if you know how to do it, which is no big trick either....just practice.
I never met any magnum shooter with any real experience who believed that you get sloppy and indifferent about bullet placement with a magnum cartridge. But they do allow you to move heavy for caliber bullets at the same or faster velocities as smaller cartridges do with lighter bullets,and that has advantages sometimes.
No doubt there are some wild eyed people out there who believe you can slop bullets from magnums into the edges of elk vitals with good results. I can only guess they have not shot many elk,nor seen many killed.
