Load data for 300 gr.FP Hard Cast in .458 Socom. Need Help

921 Views
Last Post 04 March 2018

Standard Member

rjb1911 posted this 03 March 2018

Does anyone have load data for .458 Socom using 45/70 (.496) Hunter's Supply hard cast bullets. I would like to use IMR 4198 powder. Any help would be appreciated. Thanks in advance, Randy

Attached Files

2 Comments

Order By: Standard | Newest | Votes

CBA Member

358156hp posted this 04 March 2018

Randy, I suspect you'll end up in the 40 gr range for that bullet, which is a standard Magma Engineering design. The best place to research this information is probably http://458socomforums.com/

They do have a reloading board, and you should be able to find something out there. I doubt you'll find that exact bullet design being used because it's a bit on the light side for mainstream cast bullets in the SOCOM. I'm currently building an upper myself, but haven't starting loading for it yet.