Originally Posted by Iron Worker
Dang isn't it typical of Weatherbys to require 5 to 10% more powder to equal or just a few feet above standard Mags. With 95grs of Retumbo my 300 RUM produced 3,200 FPS. 117grs OF POWDER FOR WHAT???????????????
Easy there firecracker....comparing retumbo to H50bmg is comparing apples to oranges. The velocities that I have used are based off of quickload data, Hodgdon, and sierra published information. I know it is not the most accurate, but it gives me a ball park speed to start with as I don't have easy access to a crono. If you are getting 3200 from 92 grains of retumbo, my hat is off to you, you are getting 150 fps more than Hodgdon claims....but like I said, I don't have crono data for the 30-378.
I plan to do the same thing, there is 28" Lilja in my future.