Rklenke wrote:Following. I just bought the Lee .459 500 grain mold. I plan on powder coating. I've done all sorts of internet searching and can't find much for starting loads. I plan on using 1680 or Shooters World Blackout. I won't hijack your thread, I'll make my own when I get all set up to shoot.
Quickload doesn't support that bullet but I took the Lee 300gr C452-300, lengthened it to 1.43 while upping the weight to 569gr. I don't know what COL you use but at 2.26, you can stay subsonic up to 21gr of 1680 (86% fill). If you load it for a bolt action (longer COL) you can increase the charge and stay subsonic. Quickload also does not support newer powders like Shooters World Blackout, so no prediction was possible. That's my biggest beef with Quickload. There's at least a dozen newer powders that the author has not kept up with, including Hodghdon CFE Blackout.
If you know what COL you will be loading the 1680 to, I can plug it in and see what QL predicts.
Hoot
Edited to correct mistyped weight and length. Was too early...