RARE is the man who, with a Sendero weight rifle chambered in the above calibers, can fire from prone with a loop sling, and maintain natural point of aim from shot to shot. IE, the dominant hand comes up and flicks the bolt and no azz-wiggling.
Rare is the man who, in a hunting situation, would fire from prone and choose a loop sling over a rest. Especially in order to take advantage of what this cartridge has to offer. It's a long range cartridge.