The 300-grain (19 g) round offers a supersonic muzzle velocity of 1,900 ft/s (580 m/s) and 2,405 ft⋅lbf (3,261 J),[1] similar to a light .45-70 but with a much smaller case. That's not the way things are in the real world. I am not surprised. A standard 20-round 5.56mm NATO magazine can hold seven .458 SOCOM rounds and a standard 30-round 5.56mm NATO magazine can hold ten .458 SOCOM rounds. This makes it difficult and complicated when you are in search of the right upper receiver for your 458. The mighty .458 Winchester Magnum only bumps 2,100 fps with the 300-grainers. Then, there are the guys in lab jackets at the commercial plants who try to bring out new commercial cartridges with a little more oomph and, hopefully, sales appeal. Pulling the bullet showed a powder charge of 29.2 grains of a flake powder that filled the case to about 2⁄3 capacity. Good shooters will no doubt stretch that a lot, with high BC bullets, but big game is way different than steel gongs. The Rock River line is known for quality, and this rifle is no exception. We have found that the .458 SOCOM offers peak downrange performance when firing … I started the blog to share my experience and gun … There are multiple bullet weights and grains when it comes to the 458 SOCOM. It was intended to make up for the limitations of the 5.56 rounds by accommodating larger diameter bullets with more destructive force. Verify range and wind, aim a foot high of the boiler room and you are having venison for supper for the next few months. Generally, hunters don't take well to change, but ARs and modern files are becoming more common on the hunt. Standard magazines can be used for the bigger caliber, but do have to be modified slightly, and the sheer size of the round significantly reduces magazine capacity. Most of the companies bidding for the new gun contract assumed another .30 caliber was the way to go, and the early designs submitted were in .30-06 or .308. A 14.5’ barrel like this might not unleash the SOCOM’s maximum penetration power, range, and accuracy. Maybe they have a magic trigger finger. Bullet choices are vast with Nosler, Hornady, Barnes, Speer, Woodleigh, Swift, A-Frame, Sierra, and Lost River all offering great bullets in .458 from 250 to 600 grains. Want to wear when you're heading into the wild? The .458 SOCOM (11.63×40mm) is a moderately large round designed for a specialized upper receiver that can be mounted on any AR-15 pattern lower receiver. The consensus was a one-shot stop would sure be nice. With those weights, you don't have enough powder capacity in the .458. I primarily bought it because of the availability of a second shot if the first goes astray and how great it will be hunting the thick pines and … A lot. It's an odd set of dimensions, but, as we will see, an extremely clever design for its purpose. The cartridge case design was finalized based on discussions with Tony Rumore at Tromix suggesting a lengthened .50 AE case would work well in the magazines as well as be the largest diameter case to be able to feed through the barrel extension. Marty ter Weeme, founder of a company called Teppo Jutsu, L.L.C., went to work. 458 SOCOM was designed with AR platforms in mind; primarily the original 5.56 versions. Then, of course, you have the "wildcatters" who take everything out there and neck it up and down just to see what happens. Many Somalis would chew the drug Khat all day and the effects of the drug would both curb their appetite (in a country plagued by famine) and increase their pain tolerance. The .50 AE rim diameter was reduced from .514 inch to .473 inch for compatibility with other platforms, primarily bolt-action rifles. These were the design limitations Marty ter Weeme had to work around to give the little AR-15 real muscle, but it didn't stop there. Michael Nelson. Now, your .223 AR has morphed from a varmint getter to a full-fledged deer-, bear- and elk-stopper by simply changing the upper — no new FFL transfer required. Just get a .458 upper available from Rock River Arms, Teppo Jutsu, or other custom builders, get loaded ammo from SBR Ammunition, Corbon, or Reeds and go. The 458 SOCOM can manage 140 to 600 gr bullets, which means that it’s more powerful. Both Starline and CorBon assure me that supplies should increase by the time this goes to press. 300gr JHP – This is the best value in 458 SOCOM. The end result is a bit of an odd-looking case, but one that accomplishes all the goals. Low recoil – maximized velocity. A bit on the results before I go on. Cons. Hello there, it’s Michael here. Ideal for long barrel shooters. There is an ACE skeletonized buttstock that comes with a ½- or 1-inch rubber pad, and my order went in to Brownells immediately after doing the testing. Both Remington and Winchester produce bulk bullets in .458. The .458 SOCOM, by nature, will not enable you to accurately shoot at long ranges, but that means accuracy at the upper end of its range is all the more important. It's certainly big enough for elk, and there's not a deer alive that will walk away from a solid hit. The more grains they consume, the more the speed drops. ArmaLite engineers simply took their .308 AR-10, made it smaller, chambered and timed it for a new, hot .22 based on a blown-out .222 called the .22 Special, later named the .223, and resubmitted it as the AR-15. The cartridges considered were 7.62×39mm, 9×39mm Grom, .45 Professional (which has since become the .450 Bushmaster), and .50 Action Express. Dies are available from Hornady, Lee, CH, and soon will be available from Redding. It also uses a small rifle primer so the case will handle more pressure. Keenly priced. The project sponsor set forth a number of specific requirements namely that the cartridge had to fit in the M4 carbine and be capable of firing heavy-for-caliber projectiles at subsonic velocity using suppressors. The Government bought it, Colt bought the design rights from ArmaLite, and AR-15s wearing a Colt logo tromped the rice paddies of Vietnam for years, going on to become the primary military firearm to this day. What does all this have to do with the .458 SOCOM? The energy of such a combination is 2,400 foot-pounds at the muzzle and, within 100 yards, it doesn't weaken much. Capacity: 30 … The 300-grain (19 g) round offers a supersonic muzzle velocity of 1,900 ft/s (580 m/s) and 2,405 ft⋅lbf (3,261 J), similar to a light .45-70 but with a much smaller case. Range. Stay tuned. Whatever your preference, bullets won't be a problem, nor will the large pistol primers this case uses. They range from 250 grains to 600 grains. Hornady’s FTX – The spire point and overall design of this bullet offer greater range and terminal ballistics. [citation needed]. The 458 SOCOM was designed for a very specific purpose. I'm anxious to work up reloads, but you can't hotrod AR loads. Traveling here to there, a little fishing might be good for what ails you. If you are a shooter who is looking to stretch range limits of the .458 SOCOM cartridge with appropriate accessories, then this barrel will certainly meet your needs. The.458 HAM’R Ultimate Hunter Rifle The rising popularity of the AR-15 and its rapid move to the dark timber has generated a need for that kind of muscle in the AR. The 458 SOCOM cartridge offers the practical ballistics of the legendary .45-70 in a modern AR platform rifle and is capable of firing 250 to 600 grain .458 caliber bullets in a lightweight, controllable package. Odd Uppers: Hunting Small Game with an AR. With the introduction of the .458 SOCOM, the trim AR-15 is more than tough enough for the big guys. The.458 SOCOM (which stands for Special Operations Command, by the way) can handle bullets ranging 140 to 600-grains. .458 SOCOM: 300 grains/2,000 fps (claimed)/2,665 ft.lbs..45-70: 300 grain/1,800 fps/2,158 ft.lbs..450 Marlin: 350 grain/2,100 fps/3,425 ft.lbs. 458 Socom works with bullets ranging from 140 to 600 grains. Get an inside look at this hunting weapon. Pros. You can make a fatter case work, but you can't be very much longer. Thinking about trying out a kayak when it comes to getting those skinny-water fish? The real cleverness in the design of the .458 SOCOM is that nothing but the upper need be changed — same magazine as the .223, same buffer spring in the buttstock, same everything. © Copyright 2020 Military.com. I say "claimed" with the .458 SOCOM, because that's what the designer's say in their sales hype, but other sources say it's more like 1,750 to 1,800 fps, or, about the same as the .45-70. The .458 SOCOM (11.63×40mm) is a moderately large round designed for a specialized upper receiver that can be mounted on any AR-15 pattern lower receiver. .458 socom Posted by Josh Murphy on Sep 13th 2020 I love the rifle it functions perfectly I wish it had a thread protector or a simple muzzle brake and the shipping took longer than expected but during the pandemic I should have expected as much over all Im pleased with my purchase Western Powders’ Handloading Guide Edition 7.0, available on-line, offers a lot of information for both the 450 and the … Turning to the experts here. Need some witching hours strategies for bass fishing? They are made by Starline and available from them, Midway or Graf & Sons, but due to a fast-rising demand and the general shortages we've experienced since the last election, there are currently brass shortages, and orders are going on backorder. The recent rush of short and super-short cases that followed the .300 RUM are a perfect example of this, as are the .444 Marlin, .338 Federal along with many others. The cartridge had to be suppressor-friendly, meaning it had to be capable of muzzle velocities below 1,000 fps (subsonic) and still reliably cycle the action in semi- or full-auto. This AR design likes this load. Even the lightest.458 SOCOM round is more than three times heavier than the M855 round. The HAM'R has the same retained energy at 200 yards that the SOCOM has at 125 yards." Combined with the wide selection of bullets available in .458 diameter, this cemented the choice of caliber. The case length was chosen to be compatible with the Barnes 300-grain X Spitzer bullet. It was at an informal gathering of special ops personnel, specifically Task Force Ranger, when the subject of stopping power came up. This material may not be published, broadcast, rewritten or redistributed. Research had indicated that a short belted cartridge called the .458 × 1.5" Barnes had been adopted for use in suppressed bolt-action rifles for use in SE Asia during the Vietnam War. As noted above, the cartridge was designed to be 100% compatible with the M4 platform. You get the TAC-15. Bill Wilson developed the HAM'R to ensure full expansion of the bullets at longer ranges. I fired about 50 rounds downrange, all fed from standard 10-round .223 magazines. Other loads for reloaders are available from the Teppo Jutsu Web site, and a lively reloading discussion is always underway at the .458 SOCOM Forum. Other cartridges like the .450 Bushmaster or .50 Beowulf were created to fill this void. Thoughts of AR-15s automatically lean towards their most familiar load, the versatile.223, and the expansion to .204, 6.8, .30 Remington AR, and the like have given it solid deer and antelope hunting credentials. Learn how and when to remove this template message, https://en.wikipedia.org/w/index.php?title=.458_SOCOM&oldid=994431253, Articles with unsourced statements from December 2020, Articles needing additional references from August 2010, All articles needing additional references, Creative Commons Attribution-ShareAlike License, This page was last edited on 15 December 2020, at 18:07. For hunting medium to large game, bullets in the 250 grain– 400 grain weight range possess devastating killing power. It would quiet things down quite a bit and probably add a bit more velocity. There’s no dearth of .458 bullets up to 500 grains for reloading thanks to the 458’s faster twist rate but hard-copy data is a bit skimpy. 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