![](http://www.sixgunner.com/linebaugh/seminar_images/Mvc-019s.jpg)
A fellow in Missoura named John Linebough has been building .500's on the ruger blackhawk and bisley frames for years. Damned pretty gun too.
![](http://www.sixgunner.com/linebaugh/seminar_images/Mvc-010s.jpg)
Check out some testing that was done with various loads. http://www.sixgunner.com/linebaugh/penetration_test.htm