BlackbearHunter:

Let us know what you think of the IMR3031 in your 458. That was Elmer Keiths powder of choice for the 458 Win Mag and a 500g bullet. I can look up his numbers if you like, I have it on file.

I haven't tried it in my 458, as I found H4895 gave me all the velocity I wanted. I did, however, check with the IMR people and they indicated that I probably wouldn't like it, as there are usually unburned powder coming out the muzzle and it ends up being an expensive filler.

I always thought that statement to be a bit weird, since Elmer never said anything about that in his writings. Maybe I should load up a few rounds and see what happens.

RobertD