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Centerfire Rifles - Semiautomatic or Gas Operated Centerfire rifles, carbines and other gas operated rifles.

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  #1  
Old 05-19-2017, 10:07 AM
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Default 458 Socom build

What are reputable and good parts companies for a 458 Socom? Also, 14.7 or 16' barrel?
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  #2  
Old 05-19-2017, 10:16 AM
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http://www.tromix.com/458-socom-parts-1.html
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  #3  
Old 05-19-2017, 10:31 AM
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X2 on tromix. I got one of their complete uppers. Very happy with it.
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  #4  
Old 05-19-2017, 10:40 AM
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Joe Bob Outfitters. I got one of their complete uppers and have been happy with it. I built it as a hog gun. Runs 100% of the time and accurate enough to make me confident of hits out to 100 yards. It is expensive to feed, though. I reload but need to get more brass.
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  #5  
Old 05-19-2017, 10:45 AM
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X3 tromix
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Old 05-19-2017, 10:49 AM
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X4 Tromix complete upper
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  #7  
Old 05-19-2017, 10:58 AM
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Im happy with my tromix barrel, bolt and upper receive
Also got a case gauge for reloading

Last edited by MurdaJ; 05-19-2017 at 11:14 AM..
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  #8  
Old 05-19-2017, 11:12 AM
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Another vote for Tromix. Also avoid Radical Firearms, their build quality is shoddy at best, and I believe they didn't properly license the 458 socom design. Also they went off the rails when they didn't receive a favorable review from Primary & Secondary about their build quality.
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  #9  
Old 05-19-2017, 11:17 AM
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They have an option for 2 different muzzle breaks, One is the radial and the other normal. Which one is better?
Also, which barrel did you guys get?

Thanks
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  #10  
Old 05-19-2017, 11:22 AM
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Anyone have any opinions on Rock River Arms? I noticed they're running a 20% off special on uppers, including .458 SOCOM.
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Old 05-19-2017, 11:42 AM
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Why would you buy RRA after what they've done in IL re: gun rights? Go tromix.
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  #12  
Old 05-19-2017, 12:15 PM
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Quote:
Originally Posted by Sizzlechest View Post
They have an option for 2 different muzzle breaks, One is the radial and the other normal. Which one is better?
Also, which barrel did you guys get?

Thanks
My upper had a regular brake, I'm not an engineer by any stretch but I felt the barrel walls were a little thin to be putting a compensator on it and worried about it stressing the barrel since it applies a downward force without an opposite force like a brake would.
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  #13  
Old 05-19-2017, 1:23 PM
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Tromix for sure

I do have a radical firearms 458 also but it was only $419 and so far so good
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  #14  
Old 05-19-2017, 2:01 PM
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Quote:
Originally Posted by ΜΟΛΩΝ ΛΑΒΕ View Post
Anyone have any opinions on Rock River Arms? I noticed they're running a 20% off special on uppers, including .458 SOCOM.
I have a Rock river upper and love it of course I ve had awhile. w/ 14.5inch barrel with MB welded on
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  #15  
Old 05-19-2017, 2:03 PM
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Rock river and tropic are the two licensed to build to spec from my recollection. Have the best reviews for quality from what I've seen too.


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  #16  
Old 05-19-2017, 2:06 PM
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I also went with Tromix.
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  #17  
Old 05-19-2017, 6:19 PM
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I went with Wilson Combat. Seems real nice for the small amount I have shot it. It is a tad expensive to shoot paper with. Hopefully I'll be after some hogs soon.
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  #18  
Old 05-19-2017, 8:44 PM
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Rock River had a killer discount going when Trump got elected. Pretty happy with the upper though knowing now RR sold gun owners down the river I would spend my money with Tromix.
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  #19  
Old 05-19-2017, 10:28 PM
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+5 for Tromix.Customer service is ace. I wished I ordered the heavy weight barrel. The light weight barrel seems a bit too thin. I bought the barrel with matching bolt and upper receiver.
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  #20  
Old 05-20-2017, 8:08 AM
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Quote:
Originally Posted by HkUSP45 View Post
I wished I ordered the heavy weight barrel. The light weight barrel seems a bit too thin.
What's wrong with a thin barrel? I want a socom, and the light barrel is what I am looking at.
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  #21  
Old 05-20-2017, 5:35 PM
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I bought a Rock River upper a while back....not bad, BUT.....I wish I had just gotten a Tromix. Tromix and Teppo Jutsu worked together in developing the .458 SOCOM in the first place, so they have as much experience in knowing all the ins and outs of this round as anyone you will find.

Rock River uses the proper reamers so their chambers are true to original .458 SOCOM specs, (Wilson however does not use true to spec reamers, which is disappointing to me, and has caused me to avoid their 458 products)

However, Rock River makes their bolts from an inferior steel instead of 158 carpenter, so I'm wanting to get a replacement bolt, (and maybe a carrier too), from Tromix and probably have them NP3 coated while I'm at it.

I wasn't totally happy with the handguard on my RRA, so I'm replacing it with a light weight M LOK hand guard from Midwest Industries, (which is available s an option directly from Tromix when you order one of their uppers.

So, if I had just ordered from Tromix in the first place I could have saved all the hassle and the upper would have actually cost me less in the first place. Plus, the threads on the RRA barrel are different than pretty much every other 458 SOCOM offering, (they do however offer a couple different brakes of their own, and the Smith Vortex flash hider and the Smith muzzle break with the proper threads for their barrels)

I don't know if Tromix offers an adjustable gas block, but that is one option I have also decided I want to add. CMMG offers an adjustable gas block on their 458 Anvil rifles, and the non adjustable gas block on the RRA will cycle the more common ammo in the 250-350 grain range, but when you get in to the extremes, (as you can find .458 SOCOM ammo anywhere from around 140 grains all the way up to around 500 or 600 grains), the non adjustable RRA gas block doesn't always cut it. So now I'm going to add even more on to the cost of my upper, especially since I want the expensive titanium block from SLR rifle works.

The thing that I really do like on my RRA is that I got a 14.5" barrel, (which comes out over the 16" legal minimum with the brake pinned and welded)....and last tie I looked, I didn't see a 14.5" option from Tromix, however, I think I would be perfectly happy with a 16" barreled Tromix upper. Then I wouldn't need to have my muzzle device pinned and welded and would be free to experiment with different stuff easily.
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  #22  
Old 05-20-2017, 11:28 PM
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Quote:
Originally Posted by God Bless America View Post
What's wrong with a thin barrel? I want a socom, and the light barrel is what I am looking at.
It's like sending a 12ga slug though a thin barrel. If you can't handle a heavy barrel then stick to rimfire until you beef up your pencil arms.

Last edited by bootstrap; 05-20-2017 at 11:37 PM..
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  #23  
Old 05-21-2017, 12:43 AM
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I built one off a Tromix light contour barrel and their upper.

Works great with modified mags- the best IMO are the modded Magpul mags- bodies reshaped to allow the round's nose to sit higher, and the followers ground flat (you can skip that step if you like).
The 20 round setup makes a nice 6-7 round mag which won't drag on the bench (I usually load 5).

It does thump pretty good. You'll find certain buttstocks pinch you in unimaginable ways compared to .223.

And it's cheap to shoot if you handload- I share components with .45-70.
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  #24  
Old 05-21-2017, 6:49 AM
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Quote:
Originally Posted by bootstrap View Post
It's like sending a 12ga slug though a thin barrel.
Yeah who would do that?

All of your shotguns have bull barrels, no doubt.

That way, when you pick them up with your hulk arms, you don't accidentally throw them through the range roof because they are too light.



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  #25  
Old 05-21-2017, 9:15 AM
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I don't know how adventurous the OP is but Tromix is also working on a 375 socom. Nobody has ammo for it so you'll have to reload and do your own brass work. It hits as hard as the 458 socom does and has a longer range. Once I'm better with reloading, I'll head that route.
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  #26  
Old 05-21-2017, 12:07 PM
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Quote:
Originally Posted by Mr. Torgue View Post
I don't know how adventurous the OP is but Tromix is also working on a 375 socom. Nobody has ammo for it so you'll have to reload and do your own brass work. It hits as hard as the 458 socom does and has a longer range. Once I'm better with reloading, I'll head that route.
SBR has ammo fot it, but lead-free bullets are not widely available. Barnes's bullets won't open, I asked them. Also, the ballistics are not that much better than the 458.

Still hard to let that idea go.
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  #27  
Old 05-22-2017, 12:10 AM
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Quote:
Originally Posted by God Bless America View Post
SBR has ammo fot it, but lead-free bullets are not widely available. Barnes's bullets won't open, I asked them. Also, the ballistics are not that much better than the 458.

Still hard to let that idea go.
I didn't know SBR had ammo for it now. Last time I looked they were still talking about having it soon but none available. You're right it's not a huge improvement, but from my understanding talking to Tromix is that the effective range goes from 150 yards to 250 or 300. Anything beyond that is like throwing a brick across a football field.
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  #28  
Old 05-22-2017, 7:24 AM
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Ya well SBR has ammo for it for now, but who knows how long they will? And if nobody else picks it up, might get stuck with an orphan.

Were it not for the lead ban, I might have one already. The less dense copper bullets seem to displace needed powder.

Still might do it though....
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  #29  
Old 05-22-2017, 12:52 PM
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Tromix.. like a lot of others have said. I did a 14.5" tromix barrel with a fixed brake and midway NSR rail.. fun to shoot. Have yet to find a place to go hog hunting close by. Someone mentioned Marty..guy has a forum devoted to 458socom that shares a lot of hand loading advice and technical data. I'm still buying ammo..but saving my brass... one of my favorite rifles
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  #30  
Old 05-22-2017, 1:13 PM
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Marty ter weeme?
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  #31  
Old 05-22-2017, 1:24 PM
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When I'm rich I'll get one. Rich being defined as blowing $300 on a range day and being nonchalant about it.

Out of curiosity: What's the market rate for once fired 458 brass?
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Old 05-22-2017, 1:54 PM
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In case you didn't get the point already.... Tromix.
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  #33  
Old 05-22-2017, 2:05 PM
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Quote:
Originally Posted by God Bless America View Post
What's wrong with a thin barrel? I want a socom, and the light barrel is what I am looking at.
It's the profile and i wanted to closely match the diameter of a brake.
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  #34  
Old 05-22-2017, 2:08 PM
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I need a good brass catcher. 458 brass are pricey.
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