Originally Posted by beretzs
Have you guys ever seen any of this stuff?

https://www.powdervalleyinc.com/product/shooters-world-buffalo-rifle-d060-01/

From the description it says its very similar to 5744 which some of you all have said is good stuff with lighter bullet loads in the 458.

https://shootersworldpowder.com/reload-data/

I have some but haven't used it in my 458 yet--just in 500 S&W. But it is very close to 5744. As usual, just back it off 5 percent to start from book 5744 loads and you'll be fine.