458 Socom

[hermosabeach]

I bit the bullet and now am going to start loading for .458 Socom

Found a seller selling 200 brass, 500 350 grain copper jacketed projectiles, Dies, Crimping Die, Bullet mold, 500 primers and a few pounds of powder for $200


So Now I am looking to see if anyone loads for the Socom?

Tips/ advice/ suggestions?

 

[Gibble888]

Check out the 458 socom forums.....lots of testing and data....love the hammer!

 

[bldsmith]

First post here. I have 3 458socom, 1 16" and 2 10.5". I have only worked up loads for the 16 and jus fire them through the other 2. For specifics the 458socom forums is the way to go. One thing I can tell you right up front. Do not chase speed with the socom. It is such a low pressure round that once pressure signs begin to show you are way over the 35k prescribed. Work up carefully and enjoy the thump.

I always get funny looks when I fire mine. They have a.much deeper sound than a 556. And the 10.5s throw a 3' fireball. Too much fun.

 

[dang472]

I chased cycling issues with Lil Gun powder. Went with IMR4198 and a Hornady 325gr FTX and it became a very reliable thumper.

 

[bldsmith]

Make sure you get a carbine length gas system. For a 16" barrel. Mid length systems have been known to have problems cycling and run at slower speeds. The 458 was not designed as a mid length system. Also it was designed to run with standard buffer and spring. Don't change them unless you are having problems to begin with. All 3 of mine run great with standard buffer and spring. Though my 10.5s are pistol gas.

 

[Raffica762]

I have some data for 300gr pills I'll go find it for you great round I killed many of hogs with the socom

 

[Cnewhouse48]

29.0gr lil gun and a 325gr FTX thump hard I shoot them out to 500 yards pretty easily too.

 

[bldsmith]

500yds? Wow, talk about rainbow. I figure about 211" of drop.

 

[Cnewhouse48]

500yds? Wow, talk about rainbow. I figure about 211" of drop.

Lol yeah it’s not very flat shooting but has a good thump on steel at that range.