Thread: Ar 458 socom?
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Old April 17, 2012, 05:47 AM   #8
Stargazer
Senior Member
 
Join Date: August 6, 2006
Location: Republic of Texas
Posts: 506
New Mid-Length RRA A4

I just got a new 458 Socom about two months ago. I knew going in this was a "reload" only type of caliber and I reload so no problems there. Certain times of the year it seems 458 SC ammo becomes impossible to find as cases are made once a year and there are only a handful of "Factory" ammo makers, period. That being said ALL gas systems will not work with ALL ammo. My first outing I used some SBR factory ammo. Shot fine, did not cycle the action at all. I have a mid-length gas system and this has proven to work with only certain types of powders such as IMR 4198 and my favorite, Reloader 7. Once I pulled those bullets and used RL7 it worked great.



This video shows the weak ejection caused by the use of powder such as H110.

http://dl.dropbox.com/u/10728824/Gun.../slomo_458.wmv

This one shows the good ejection using RL7 powder.

http://dl.dropbox.com/u/10728824/Gun...7_37.5_FTX.m4v

I like it, it's a hammer for sure, and it fits in an AR platform.
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5.56mm, reach out and touch something. .458 SOCOM,reach out and knock something down.


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