WOW WOW WOW. I have done some research on different powders for my 300WSM. Ran across articles on IMR4451. Also I have NEVER been able to get good groups with any ELD-X or ELD-M bullets with my 308 or 300WSM. Today I ladder tested my 300WSM with IMR4451. ABSOLUTELY the best groups I have gotten EVER. I loaded and shot 2 shot groups from 60.7grs thru 65.0Cgrs. 9 shots under 1/2". 5 shots under 3/4". 3 shots under .950". Rest were under 1.5". ALL these shots were ELD-X 168gr.