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458 SoCom

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  • Mike_from_Texas

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    Feb 10, 2010
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    I'd compare the .458 Socom recoil with that of a 12 gauge field load. I do NOT like recoil, but it was not excessive.

    I load only 300 grain bullets designed for the 45-70 for my own rifles, but I've fired other rifles in .458 Socom from SBR and suppressed form owned by my friends. It's pretty impressive and the hunters around here have dropped hogs and deer. They drop like sacks of rocks!

    A non scientific comparison puts the .458 Socom 300 grain and 45-70 300 grain real close in performance.

    Flash

    I would agree with this. I have an 11” 458 Socom SBR that I run a Crux ARK45 can on. Recoil is about like a very stout 20 gauge or a medium 12 gauge.


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    deemus

    my mama says I'm special
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    Flash... That's where I'm going with this. Swap an upper and lets roll. Do you know if the PMAGS will give me trouble? That's all I run. Trying to stream line my stock pile.

    My Hybrid does a great job at negating recoil on my 338lm. I'm confidant it will tame the 458. I watched some ballistic tests on YouTube last night. It's just devastating.

    Didn't see this get answered. Consensus is to use Metal GI mags. Pmags are not recommended. Generally the metal GI mags require no modifications.
     

    BuzzinSATX

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    Dec 20, 2013
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    Got it out yesterday. Had feeding issues. Will work that out. But the Bear Creek Arsenal upper shot great.

    What a fun gun.....


    View attachment 153532

    What magazines are you using? Are they modified?

    I'm looking into one of these uppers but not sure what direction to go. Considering the RRA, Bear Creek, and Radical Firearms. Leaning towards the RRA at this point as price is similar to the Radical from Primary Arms after factoring in taxes, shipping, and military discount.

    Bear Creek is cheapest but hearing about feeding issues and wonder if they would be solved using the Radical Arms magazines: http://www.radicalfirearms.com/product-p/f-99931150.htm
     

    deemus

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    What magazines are you using? Are they modified?

    I'm looking into one of these uppers but not sure what direction to go. Considering the RRA, Bear Creek, and Radical Firearms. Leaning towards the RRA at this point as price is similar to the Radical from Primary Arms after factoring in taxes, shipping, and military discount.

    Bear Creek is cheapest but hearing about feeding issues and wonder if they would be solved using the Radical Arms magazines: http://www.radicalfirearms.com/product-p/f-99931150.htm

    Used a very old metal GI mag. But I think my loaded rounds may have been too long.

    I am modifying my rounds tonight (making them shorter) and hope to get to the range this week. I also plan to try a newer metal GI mag. Hopefully those two changes will make it function properly.

    Planning to look over at the 458socom forum to see if there is a thread on my issue.

    My problem is not that the rounds did not load, they did. My problem is that the bolt is not closing all the way. But when I removed the mag, they did, and shot and ejected fine.
     

    BuzzinSATX

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    Used a very old metal GI mag. But I think my loaded rounds may have been too long.

    I am modifying my rounds tonight (making them shorter) and hope to get to the range this week. I also plan to try a newer metal GI mag. Hopefully those two changes will make it function properly.

    Planning to look over at the 458socom forum to see if there is a thread on my issue.

    My problem is not that the rounds did not load, they did. My problem is that the bolt is not closing all the way. But when I removed the mag, they did, and shot and ejected fine.
    Good information. Thanks!
     

    deemus

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    Reading in the 458 site, they say to avoid the Radical gear. Lots of problems. RR is very respected due to them making a great product.

    I called my manufacturer, and they use Lancer L5 mags when test firing, so I ordered a couple. Hoping this fixes my issue. But I'm also making my OAL on the rounds I loaded a little shorter.
     

    deemus

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    Update:

    Took it back to the range today. It chambered and cycled every round.

    My problems were that my rounds were a bit long, and the mouth was too large to chamber. Star brass suggests running the case through the Lee powder through expanding die. So I did that. It's pretty much the only way the bullet will fit into the case. It's just too tight without doing that. At least with Star new brass.

    Several threads and Flash mentioned not using a crimp, so I didn't. But without a very light crimp, the case mouth can hang and not chamber all the way. That was my main problem. Once I applied the crimp they all functioned flawlessly. These were all the rounds that would not feed last trip.

    I think the CMMG modified Lancer mags also helped.

    The recoil is not bad. And it's a ton of fun to shoot. Now that I have my loads figured out, I plan to load some test rounds and find an accurate round.

    be255ddd32d6a7ec32734abf3a006537.jpg
     

    ROGER4314

    Been Called "Flash" Since I Was A Kid!
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    Jul 11, 2009
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    Great shooting! What distance was that last target made? It's easy to see why the .458 Socom is a devastating piggie gun. One round behind the ear is all that's needed and they drop like a rock!

    As for me, the cataract in my right eye has all but blinded me in that eye. Since that is my dominant eye, it shuts me out of rifle and pistol shooting. Gonna keep both of my range memberships until I get this fixed.

    Incidentally, the LGS where I spent so much time and had so much fun, went out of business. It was fun while it lasted! For the time being, I'm hanging around the local Senior Center and have resumed 8 ball pool shooting. They have a real nice pool table. If, by my next birthday, skills improve, I'll get rid of the living room furniture and buy a table for the house.

    Flash
     

    deemus

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    I bought 250 brass from Starline. At 250 it was reasonable. But it's expensive to shoot.

    The target was 50 yds away. But I found out the scope was loose when I got home. More test / shooting for function on that trip. I'll be loading and shooting for accuracy next time. Likely the same test loads as before to start.

    I really like this gun. I'm planning to be accurate at 50 yds. My pig lease has at most 80 yd shots. But most are 50 yds or less.

    Flash, get that eye fixed. They can have you shooting long range again in a few weeks. And very sorry to hear about the range. Sounds like you guys had a ton of fun.
     

    ROGER4314

    Been Called "Flash" Since I Was A Kid!
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    At the now defunct Gun Shop, I had the chance to work up loads for (legal) SBR's and suppressed rifles in .458 Socom and .375 Socom. As I recall, the coolest .458 Socom was 10.5 inches in the barrel and I've forgotten the suppressor brand. Accuracy was exceptional and the "kool" meter was pegged!

    As to the expense of the rounds, I looked at it a different way. That rifle is several steps above a standard AR-15. The .458 is a genuine shoulder cannon! Repeating a story that I posted earlier, Friend Jim was going to shoot a sizable pig in a front head shot. The animal raised it's head just as the round fired and it penetrated the entire length of the spine area and poked out at the rear end.

    I examined the bullet that killed that pig. That bullet did not expand at all. That's why I like the Hornady 4500 slug. It's designed for the 45-70 and should expand properly.

    Think of the .458 Socom this way...………. It's like carrying a 45-70 in a light weight semiautomatic format. Many piggie hunters say that the 45-70 is the "go to" round for pigs.

    Flash
     

    texanite15

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    May 29, 2019
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    Recoil IMO just depends on what you're used to shooting and how comfortable you are with shooting that's freaking huge lol. Definitely a hog thumper at that. Great short distance hog machine.
     

    deemus

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    Totally forgot about this thread. Primed up some brass last week to load some test rounds for accuracy. Had a busy year so far, but will get those done pretty soon.

    Not sure when I have had this much fun shooting a gun. I love that 458.
     
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