Frost Ranch has been featured in a couple news articles online over the last few years.  Give them a read to see how they are working with the Murray Grey breed in the Sandhills of Nebraska.

http://www.ctpost.com/news/article/Fairfield-cowboy-raises-organic-grass-fed-2159447.php

http://www.nytimes.com/2013/06/18/us/for-ranchers-an-uncommon-quest-for-grass-fed-beef.html