The heavier mono metal bullets usually are too long to stabilize in many rifles, plus one of the benefits of mono metal bullets is that they tend to hold together, so they penetrate well, and you can choose lighter bullets for the same penetration, yet get a bit additional velocity and shock.

Phil Shoemaker
Alaska Master Guide,
Alaska Hunter Ed Instructor
FAA Master pilot
www.grizzlyskinsofalaska.com

Anyone who claims the 30-06 is not effective has either not used one, or else is unwittingly commenting on their marksmanship.