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1/10/2012 7:35:29 AM EDT
I have the itch for a RRA .458 upper. What is everyone going with..mid length or carbine, flash hider or muzzle break, Normal or operator? So many options to choose from...just wondering what worked best for everyone. Thanks
1/10/2012 8:11:39 AM EDT
[#1]
Which lower will you be using?

Be sure to post pics when you get this beast up and running.  
1/10/2012 8:34:43 AM EDT
[#2]
16" barrel, I'd go with carbine for a .458.  I've got a 10.5" with pistol.  Huge bore and low pressure cartridge makes it harder to build up pressure, the shorter gas systems are going to be more reliable.
1/10/2012 9:01:15 AM EDT
[#3]
Not sure which lower I will use. I have 1 bushmaster and 2 S&W.
1/10/2012 9:34:28 AM EDT
[#4]
Definitely go with carbine length, there's a thread exactly like this over at 458socomforums. People with mid-length systems are having major reliability issues, while the carbines run like a sewing machine.
1/10/2012 11:58:47 AM EDT
[#5]
Quoted:
Definitely go with carbine length, there's a thread exactly like this over at 458socomforums. People with mid-length systems are having major reliability issues, while the carbines run like a sewing machine.


Midlengths CAN be made to run reliably, with the right powder and load. However, its a LOT easier with a carbine and the carbine will give you a lot more flexibility with powders and projectiles. If you plan to run factory ammo carbine is really the only way to go right now.
1/10/2012 1:28:41 PM EDT
[#6]
Thanks guys...so carbine it is. Now do I go with the operator? And the upgraded flash hider? Will rra let me upgrade the charging handle to one of the better ones?
1/10/2012 1:41:39 PM EDT
[#7]
Unless you need the rails I would go with the regular CAR upper with the smooth handguard. With that recoil the rail will chew up your hands. Their "Advanced Quad Rail"  with the smooth section is a heavy beast. They do have options on their website to upgrade the charging handle and flash hider.
1/10/2012 2:29:09 PM EDT
[#8]
I have a RRA .458 socom midlength  with a flash hider. No problems at all with any of my handloads ( 300-405 gr bullets ) . Very accurate and reliable .
1/10/2012 3:35:06 PM EDT
[#9]
Quoted:
Quoted:
Definitely go with carbine length, there's a thread exactly like this over at 458socomforums. People with mid-length systems are having major reliability issues, while the carbines run like a sewing machine.


Midlengths CAN be made to run reliably, with the right powder and load. However, its a LOT easier with a carbine and the carbine will give you a lot more flexibility with powders and projectiles. If you plan to run factory ammo carbine is really the only way to go right now.


This is true, but at this point I wouldn't recommend a mid-length .458 to someone who doesn't plan to exclusively shoot reloads.
1/10/2012 4:19:18 PM EDT
[#10]
what is the recoil comparable to?
1/10/2012 4:34:08 PM EDT
[#11]
Quoted:
what is the recoil comparable to?


Before I bought mine, everyone said it was like shooting a 12 gauge pump with magnum buckshot or slugs.

After shooting mine with some 410gr. factory ammo, I'd say it's not nearly that stout, more like a .243 or light .308 load.
1/10/2012 4:43:38 PM EDT
[#12]
Quoted:
what is the recoil comparable to?


That's kind of a broad question, but at the very least if you are accustomed to only shooting 5.56 AR's it will come as a rude awakening. Heavier bullets with supersonic loads like the Remington 405gn JSP @1700 fps is pretty sharp. To me it felt like a high velocity 12ga load or a hot .308 from a lightweight bolt gun. With a 300gn JHP loaded around 1900fps its milder, maybe like 12ga bulk ammo. It will also depend on how heavy your set up is and what springs you use. The Socom was designed to run standard recoil springs and at first I used a standard rifle length system. I've switched to a carbine stock with a Wolff heavy carbine spring and its definitely easier to handle with the 405's, but it may not like the 300gn loads (haven't had a chance to try them yet). I have no experience shooting subsonic so someone else will have to chime in with that.
1/10/2012 4:44:39 PM EDT
[#13]
Quoted:
Quoted:
what is the recoil comparable to?


Before I bought mine, everyone said it was like shooting a 12 gauge pump with magnum buckshot or slugs.

After shooting mine with some 410gr. factory ammo, I'd say it's not nearly that stout, more like a .243 or light .308 load.


Any idea what velocity that 410gr ammo was loaded to?
1/10/2012 5:43:39 PM EDT
[#14]
I would go with the carbine upper . as a matter of fact I would buy the cheapest upper they have because you will change some things sooner or later . Its part of the illness and there are no cures.
I have yankke hill machine light weight rails on mine with ladder covers and I never noticed my hand being chewed up . I also use the buffer spring included with the upper and have no issues with 300, 325 or 405 grain loads.
1/10/2012 8:58:11 PM EDT
[#15]
Quoted:
Quoted:
Quoted:
what is the recoil comparable to?


Before I bought mine, everyone said it was like shooting a 12 gauge pump with magnum buckshot or slugs.

After shooting mine with some 410gr. factory ammo, I'd say it's not nearly that stout, more like a .243 or light .308 load.


Any idea what velocity that 410gr ammo was loaded to?


Didn't take my chrono out with me that day, it's some SBR ammo that Midway was closing out back around September. I see on the SBR website they have some 410gr FMJ's they advertise at 1,380 fps, but mine were jacketed soft points. My gun also has an ACE skeleton stock with 1/2" recoil pad.
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