.458 Socom

Festeraxp

Evil is Powerless, If the good are unafraid
Sep 23, 2018
44
15
8
Pennsylvania
#1
Anyone have any suggestions on loading.
I bought some Hornady #4500 .458 300 grain projectiles. Just can’t really find any load data. I’m using h4198. I also got some Hornady 350 grain #4503 projectiles. Also oal if anyone knows. Any advice would be appreciated.
 
Jan 1, 2018
15
4
3
#2
Lil gun (work up slow watch for temp extremes)
H 4198
Imr 4227
Just seat to cannelure if powder will allow you can alway play with oal to fine tune later if needed.
Cci 350 work best for me
No crimp or little with lee fcd
I havent played with #4503

Visit the 458 socom forums website....bunches of data and load testing.

D
 
Likes: Festeraxp
May 12, 2013
75
5
8
#7
be cautious of load data you find on the internet for the 458 socom. I can speak from experience that the Barnes 300 ttsx bullet requires much less powder than other 300-350 grain projectiles.
 
Likes: Raffica762