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458 socom vs 556 - 0. Hi! I'd like to do the same thing. I always thought a modified upper reciever was needed also, wider ej

6mm ARC vs 6.5 Grendel; 44 vs 45; 458 SOCOM vs 5.56; 357 vs 44; 32 ACP vs 380;

450 Bushmaster vs 458 SOCOM vs 50 Beowulf: Battle Of The Big Bore AR Cartridges. 458 Win Mag vs 458 Lott: What You Know May Be Wrong.450 Marlin: Everything You Need To Know. The Lyman 50th Edition (p352-360) and Hornady 10th Edition (p754-761) reloading manuals were used as references for this article. Enjoy this article on the .45-70 …The 300 AAC Blackout and 458 SOCOM were both developed for the AR-15 to address the stopping power issue of the 5.56 NATO. In general, the 300 BLK and 458 SOCOM both achieved their goals of increasing the overall power level of the AR-15 rifle, however the way each went about achieving it was somewhat different.The 458 SOCOM makes for an amazing hog hunting and self-defense cartridge as well as just being fun to shoot in an AR-15. However, the 5.56 NATO has been the gold-standard AR chambering since its release in the 60's. The 458 SOCOM really helps increase the stopping power of the AR platform but it does so at the cost of magazine capacity, range ...Wilson Combat .458 SOCOM Build Kit, 14.7″ Recon SR Barrel – $549.95. Wilson Combat Muzzle Brake Blast Diverter – $64.95. More .458 SOCOM stories >>>. UPDATE: We add the Liberty Suppressors Goliath Silencer …The .458 SOCOM (11.63×40mm) is a moderately large round designed to work in an AR-15 platform. This is achieved by installing a 458 bolt and barrel. The 300-grain (19 g) round offers a supersonic muzzle velocity of …The 300 AAC Blackout and 458 SOCOM were both developed for the AR-15 to address the stopping power issue of the 5.56 NATO. In general, the 300 BLK and 458 SOCOM both achieved their goals of increasing the overall power level of the AR-15 rifle, however the way each went about achieving it was somewhat different.Patreon: https://www.patreon.com/kotaboy32Email: [email protected] Facebook Page: https://www.facebook.com/Kotaboy32-14...Disclaimer: These vid...Best Barrel Length for 458 SOCOM. The best barrel length for a 458 SOCOM is 16″ to achieve maximum powder burn and muzzle velocity. Barrels over 16″ will not increase velocity significantly because the 458 SOCOM round was optimized for barrels as short as 9.5″ and is popular in AR pistol builds. Best Barrel Length for 45 ACPCan this product of a barbeque and a cold brew become the next deep-woods superstar? by Ralph M. Lermayer There are several ways new cartridges come into ...Oct 1, 2020 · A .458 SOCOM upper should be just as easy to customize as a standard 5.56mm upper; the barrel and bolt are the big differences; accessories are not. Overall, if you decide to add a good.458 SOCOM upper receiver to your collection, you are opting for a serious upgrade in power. You will have the flexibility to customize the firearm combined with ... Wilson Combat has been the innovator in custom pistols, long guns, and accessories since 1977. Home of the Wilson Combat 1911, EDC X9, WCP320, and more!.458 SOCOM 10rnd Mag $1.28(PPR)*10 = $12.8 per mag (300gr/1800fps) 2159 ft/lbs*10 = 21590 ft/lbs per mag 1686 ft/lbs per dollar ; 5.56 M193 10rnd Mag : $0.27(PPR)*10 = …458 SOCOM. I have found the 5.56/.223 and 300 BLK to be lacking in killing power unless you achieve perfect shot placement every time. The 6.8 SPC and ...٣٠ رمضان ١٤٢٩ هـ ... Rock River's new LAR-458 is chambered for the powerful .458 SOCOM cartridge, which possesses twice as much energy as the 5.56mm cartridge.The primary differences between 458 SOCOM vs 556 is bullet diameter each cartridge fires and the intended engagement ranges. The 458 SOCOM fires a 0.458" diameter bullet that is intended for close-range engagements while the 5.56 fires a 0.224" diameter bullet that excels at long-range shots. A Note on NomenclatureSBR Ammunition SBR 458 SOCOM Ammo 250 Grain Xtreme Defense. Free Shipping Eligible! $61.50. $3.075 Per Round. Rating (s) (0) Notify. 458 Socom Ammo for sale at Target Sports USA. Free Shipping on bulk .458 SOCOM ammunition, bulk rifle ammo and much more for sale online.Tactical Carbine Upper Half LAR-15M .458. .458 SOCOM Chamber. Learn More. Rock River Arms, Inc. offers a complete line of American made, custom built AR15 style rifles.Oct 25, 2022 · We’re going to compare the two rounds’ in-flight ballistics, energy, recoil and availability so you can decide whether there’s a clear-cut winner in the 458 SOCOM vs 5.56 debate. 458 SOCOM Cartridge Dimensions vs 5.56 The first thing to note is that the 10mm fires a 40-caliber bullet (0.401” bullet diameter) while the 9mm Luger fires a smaller, 9mm bullet (0.355” bullet diameter). Furthermore, the case capacity of the 10mm round is just short of double that of the 9mm, meaning that more gunpowder can fit into the 10mm allowing it to fire heavier bullets ...Oct 6, 2022 · The primary differences between 458 SOCOM vs 556 is bullet diameter each cartridge fires and the intended engagement ranges. The 458 SOCOM fires a 0.458” diameter bullet that is intended for close-range engagements while the 5.56 fires a 0.224” diameter bullet that excels at long-range shots. Muzzle Velocity and Kinetic Energy. The primary differences between 458 SOCOM vs 556 is bullet diameter each cartridge fires and the intended engagement ranges. The 458 SOCOM fires a 0.458” diameter bullet that is intended for close-range engagements while the 5.56 fires a 0.224” diameter bullet that excels at long-range shots.The .50 Beowulf and .458 SOCOM use a .50AE parent case and are almost similar in overall length and case capacity. However, the .50 Beowulf is a straight case, the .458 SOCOM uses a slightly bottlenecked case design. The .50 Beowulf uses a slightly larger diameter bullet of .500 inches, whereas the .458 SOCOM uses a 0.458-inch diameter bullet. Nov 16, 2022 458 SOCOM vs 556: Upping AR-15 Stopping Power Watch on For $20 off your next ammo purchase, go to https://ammo.com/youtube (a special deal for our viewers)! The standard AR-15 chambered in 5.56 …The .458 SOCOM round is often compared to the 45-70 round favored by the U.S. Army and buffalo hunters in the 19th century. The caliber as the NRA’s Shooting …A15-M .458 SOCOM Complete Upper. $645.99 $545.99. Choose Options. Atheris Rifle Co.- Custom AR15 and AR10 Rifles, Pistols, and Parts.458 SOCOM vs 5.56: AR-15 Caliber Comparison by. Ammo.com. 458 SOCOM vs 556: Ammo.com examines how ada... 󰤥 · 󰤦 · 󰤧 · 5.56x45 Ammunition. Aug 1 ...The general purpose of developing the 458 SOCOM was to create a round that was completely compatible with the M4 Carbine but have more stopping power than …Well, in most ways -- .308 Win kicks the snot out of 450 Bushmaster. At the muzzle they are basically the same, .308 Win has around 2700 ft.lbf and 450 Bushmaster has just a few pounds under that. The big difference is that .308 Winchester keeps at least 1,000 ft.lbf out to about 600 yards, 450 Bushmaster loses it by 300 yards.In contrast, a 458 Socom can accommodate various weights, ranging from 140 to 600 grains. It is because the .450 uses pistol bullets, whereas 458 Socom uses a rifle bullet. The wide range of bullet weights in a 458 Socom gives it an advantage over the 450 Bushmaster. A heavier bullet has more power to kill a target.Compare this to .458 SOCOM, there are hardly any available in contrast with the above two standard military calibers, and they all cost $2 to $3 a bullet and up if you can even find them. The expense, in my opinion, is not worth the performance. You can shoot more than 2-3 times as much .308 than .458 SOCOM for the dollar.We would like to show you a description here but the site won’t allow us.The .458 SOCOM round has quite a bit of power and bargain basement barrels are simply a waste of money. My suggestion is to stay with 416R gun barrel steel or 4150 GBQ mil-spec, bar-stock steel as long as it has been stress relived. The twist rate that seems to be most effective for this beefy round is a 1:14 twist.A comparison of the .458 Socom and 5.56 cartridges, two powerful rounds for AR-15 rifles. Learn the pros and cons of each, the ballistics, the range, the cost, and …Yes, you can use it provided you open the ejection port up to about .620" (5/8") wide. Tony. Posted: 5/5/2010 9:44:37 AM EDT. [#2] You can use it; but as tony said it needs to be opened up. It suffers from the same problem that the 50 does. Any standard upper can be used but the ejector port will need to be opened up.I too built a .458 SOCOM carbine . Caught a deal on a matched barrel and bolt. I didn’t think anything about it having M4 feed ramps. I bought a .458 upper to go with it, with the extra internal clearance cut before anodizing. When I function tested it the first time with live half-jacketed rounds I had the worst FTF jam I have ever experienced.In the book (and in private discussions), members of TF Ranger and USSFOD-D comment on the apparent ineffectiveness of the 5.56 ... v=ykTfyrMiXps). shwat-videos ...5 Okt 2023 ... 223 Remington/5.56×45 NATO cartridge. In the table below, we will compare the 300 Blackout and 458 Socom dimensions, muzzle velocity, kinetic ...For this load, the 350 Legend will have a muzzle velocity of 2,325 fps and muzzle energy of 1,800 ft-lbs according to Winchester’s data. In comparison, the same load in 300 Blackout will have a muzzle velocity of 1,900 fps and muzzle energy of 1,200 ft-lbs. The 350 Legend is clearly superior in terms of muzzle velocity and energy.That gives it an overall length of about 2.25 inches, so the length is close to the 450. The big difference here is the bullet diameter. A .450 Bushmaster is .452 inches while the .350 Legend is only about …Will definitely be buying more. I purchased the 20 round mag and it holds 8 .458 SOCOM. ... with several different AR15’s and thousands of rounds of various brands of 223 and 556, ranging from 55 grain to 77 grain bullets, and have not had any problems whatsoever with them. There are many great mags to choose from, and Lancer is one of them ...The .45-70 Government uses the same .458″ bullet size as the .458 SOCOM, .450 Marlin, .458 Win Mag, and .458 Lott. 45-70 vs 450 Bushmaster Rifles There is also a pretty good selection of good hunting rifles chambered in both 450 Bushmaster and .45-70, though once again, there is a big split in the types of rifles available for each.Sep 14, 2023 · If you are looking for the best 458 Socum Upper on the market, look no further than the GLFA AR-15 Complete Upper .458 Socom (best overall). The barrel on this 458 Socom resists wear, giving it a longer lifespan than others in the category. It also has an included muzzle brake for recoil reduction, which can outweigh the need for a modified ... The differences between 50 Beowulf vs 556 is the bullet diameter each cartridge fires, intended engagement ranges, and kinetic energy. The 50 Beowulf fires a 0.50” diameter bullet that is intended for close-range engagements while the 5.56 fires a 0.224” diameter bullet that excels at long-range shots.The .458 SOCOM ( 11.63×40mm) is a moderately large round designed to work in an AR-15 platform. This is achieved by installing a 458 bolt and barrel. 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. We would like to show you a description here but the site won’t allow us.The .50 Beowulf will show a slightly higher muzzle, but it losses its edge after some use. After recording the difference between .458 Socom vs. the .50 Beowulf at 100 to 200 yards, the .50 Beowulf emerged with a higher velocity. However, the difference does not surpass 100ft. Lb, the difference is therefore insignificant.Your 458 SOCOM AR 15 Upper Receiver will arrive turn-key and ready to shoot out of the box. 458 SOCOM is a "maximum stopping power" round for the AR15 platform that runs supersonic (250 grain) or subsonic (450-600 grain). Short-barrel, long-barrel and suppressed configurations are possible with this versatile round. 1:14in Twist. A3 upper w/M4 feed ramps. 15in floating MLOCK handguard. GLFA big bore stainless muzzle brake. Aluminum/Steel. Caliber: .458 Socom. Material: Aluminum/Steel. Other Features: A3 Upper With M4 Feeed Ramps, 5/8in - 24 Muzzle Threads, 15in M-LOK Handguard, Glfa Big Bore S/S Muzzlebrake. Size/Finish: .458 Socom.The .458 SOCOM feeds from a single position in the magazine, and the magazine holds 10 rounds. Since the users wanted bullet choices that left out the usual suspects back in the pre-9/11 days, those rejected being potential cartridges that used pistol bullets. So, they chose the .458-inch bullet diameter. Next up, the case.If you are planning to build your first AR-15 chambered .458 SOCOM rifle, you have quite the project ahead of you.. Although there are is a sheer abundance of parts and accessories available for the more popular calibers like the 5.56mm NATO, the .308 Winchester, the 6.5 Creedmoor, and the .300 Blackout, finding the best .458 SOCOM …A15-M .458 SOCOM Complete Upper. $645.99 $545.99. Choose Options. Atheris Rifle Co.- Custom AR15 and AR10 Rifles, Pistols, and Parts.The primary differences between 458 SOCOM vs 556 is bullet diameter each cartridge fires and the intended engagement ranges. The 458 SOCOM fires a 0.458” diameter bullet that is intended for close-range engagements while the 5.56 fires a 0.224” diameter bullet that excels at long-range shots. Muzzle Velocity and Kinetic Energy.I was shooting my custom 458 Socom Bolt Action. 16 In 1:8 Twist Barrel With a 570 Grain @lehighdefense Controlled Fracturing Subsonic Bullet @ 870 FPS. These...0. Hi! I'd like to do the same thing. I always thought a modified upper reciever was needed also, wider ejection port or something like that. If I can use any upper I want, that would be very cool. As soon as my current build is done, the 458 is next! Thanks, Orvis. 06-09-09, 15:16 #4.0. Hi! I'd like to do the same thing. I always thought a modified upper reciever was needed also, wider ejection port or something like that. If I can use any upper I want, that would be very cool. As soon as my current build is done, the 458 is next! Thanks, Orvis. 06-09-09, 15:16 #4.Although the 300 Blackout bows to the 458 SOCOM in terms of muzzle energy, the 300 BLK’s flat trajectory makes it a much better long range cartridge than the 458. At 300 yards, the 125 gr 300 BLK round has -29.7” of bullet drop compared to -43.4” for the 458 300 gr TTSX.Prompted by the lack of power offered by the 5.56 NATO cartridge used in the M4 carbine and the M16 rifle, the .458 SOCOM came about from informal discussion of members of the special operations command, specifically Task Force Ranger 's experience that multiple shots were required to incapacitate members of the opposing force in Mogadishu durin...As the 0.458” diameter bullet is far less popular than the 0.224” needed to build the .223 Rem. or 5.56x45 mm NATO round, I decided it would be safe to embark on a SOCOM handloading journey ...4 hari yang lalu ... ... 5.56 round without having to change guns entirely. A few different people got together and made it happen. When I said it matches the ...Tactical Carbine Upper Half LAR-15M .458. .458 SOCOM Chamber. Learn More. Rock River Arms, Inc. offers a complete line of American made, custom built AR15 style rifles.As the 0.458” diameter bullet is far less popular than the 0.224” needed to build the .223 Rem. or 5.56x45 mm NATO round, I decided it would be safe to embark on a SOCOM handloading journey ...A .458 upper can transform a rifle from a .223/5.56 target and self-defense rifle to a big bore, big game rifle. A Hornady Interlock 300 grain round will hit with the force of approximately 2,300 ...In the book (and in private discussions), members of TF Ranger and USSFOD-D comment on the apparent ineffectiveness of the 5.56 ... v=ykTfyrMiXps). shwat-videos ...If you do go with a .458 SOCOM, for God's sake do not buy one of those knock-off chambered .458 SOCOMs sold by Radical, Wilson, Black Hole… anyone other than those using the original true to spec chamber and make darned sure you get a CAR or handgun gassed barrel (CAR for 14-18 inches and handgun gassed for less than 14 inches).0. Hi! I'd like to do the same thing. I always thought a modified upper reciever was needed also, wider ejection port or something like that. If I can use any upper I want, that would be very cool. As soon as my current build is done, the 458 is next! Thanks, Orvis. 06-09-09, 15:16 #4.With the AR platform coming in many heavier calibers such 7.62X39, .300 AAC, .224 Valkyrie, .458 SOCOM and the .50 Beowulf, an extra heavy buffer is recommended. The H3, as well as HSS and XHfit the bill on these builds. HSS – 6.5oz. XH – 8.5oz. Pistol Caliber Builds – 5.0 oz. – 8.5 oz.Make sure you read Tom McHale’s article comparing the 300 BLK vs the .223 Rem for hunting. The .30 Remington AR, developed in 2008, has been largely overlooked. Its body is over half an inch in diameter and holds 44 grains of water. From 24-inch barrels, 125-grain bullets at 2,800 fps carry 19 percent more energy than a .30-30’s!If you are planning to build your first AR-15 chambered .458 SOCOM rifle, you have quite the project ahead of you.. Although there are is a sheer abundance of parts and accessories available for the more popular calibers like the 5.56mm NATO, the .308 Winchester, the 6.5 Creedmoor, and the .300 Blackout, finding the best .458 SOCOM …FAXON FIREARMS 10.5" GUNNER BIG BORE PROFILE AR15 BARREL, .458 SOCOM, PISTOL LENGTH, 4150 QPQ. MSRP: $255.00 SALE PRICE: $242.25. Click for Price. IN STOCK. Add to Cart The item has been added. Quick view. FAXON FIREARMS 16" Gunner, 300 BLK, Carbine-Length, 4150 QPQ - Gunner ...A15-M .458 SOCOM Complete Upper. $645.99 $545.99. Choose Options. Atheris Rifle Co.- Custom AR15 and AR10 Rifles, Pistols, and Parts.Nov 1, 2014 · The expense, in my opinion, is not worth the performance. You can shoot more than 2-3 times as much .308 than .458 SOCOM for the dollar. 7.62x39 is many times cheaper than that. .223 falls in between both .30 cals at $0.40 to $0.50 per bullet, sometimes as cheap as $0.35 or $0.30 for FMJ. As the 0.458” diameter bullet is far less popular than the 0.224” needed to build the .223 Rem. or 5.56x45 mm NATO round, I decided it would be safe to embark on a SOCOM handloading journey ...١٧ رمضان ١٤٣٧ هـ ... 458 SOCOM is a big-game cartridge capable of taking anything that walks in North America. Compared to the .223 Rem., the Alexander Arms .50 ...SKU. BCG-450-458. Qty. $79.99. Add to Cart. Add to Wish List Add to Compare. Details. Bear Creek Arsenal's .458 SOCOM/.450 Bushmaster bolt carrier groups (BCGs) are Magnetic Particle Inspected (MPI) to ensure high performance. BCA's .458/.450 BCG is made with durable 9310 Steel and compatible with both all Rear Charging 450 Bushmaster and .458 ...With the AR platform coming in many heavier calibers such 7.62X39, .300 AAC, .224 Valkyrie, .458 SOCOM and the .50 Beowulf, an extra heavy buffer is recommended. The H3, as well as HSS and XHfit the bill on these builds. HSS – 6.5oz. XH – 8.5oz. Pistol Caliber Builds – 5.0 oz. – 8.5 oz.One of the more interesting—and powerful—upgrades for the standard AR-15 rifle is an upper receiver in .458 SOCOM. Although nearly twice as wide as the .223/5.56 …Wilson Combat .458 SOCOM Build Kit, 14.7″ Recon SR Barrel – $549.95. Wilson Combat Muzzle Brake Blast Diverter – $64.95. More .458 SOCOM stories >>>. UPDATE: We add the Liberty Suppressors Goliath Silencer to the project! The first time I saw a .458 SOCOM years ago I couldn’t imagine why someone would want one.Nov 1, 2014 · The expense, in my opinion, is not worth the performance. You can shoot more than 2-3 times as much .308 than .458 SOCOM for the dollar. 7.62x39 is many times cheaper than that. .223 falls in between both .30 cals at $0.40 to $0.50 per bullet, sometimes as cheap as $0.35 or $0.30 for FMJ. The most obvious difference between the 300 Blackout vs 223 Rem is the bullet diameter that each rifle cartridge fires. The 223 Remington fires a 0.224” diameter bullet while the 300 BLK uses a 0.308” diameter bullet. Both cartridges have the same overall length so they can fit in standard AR-15 mags.Holli tests the power between a spike’s tactical 458 socoM ,350 LGND and NATO 556 In Philadelphia with special guest , Ray from Big Bore Tactical Ig- @Ran... Nov 16, 2022 458 SOCOM vs 556: Upping AR-15 Stopping Power Watch on For $20 off your next ammo purchase, go to https://ammo.com/youtube (a special deal for our viewers)! The standard AR-15 chambered in 5.56 NATO is truly America’s rifle and is a symbol of American ingenuity and freedom.4 hari yang lalu ... ... 5.56 round without having to change guns entirely. A few different people got together and made it happen. When I said it matches the ...A comparison of the .458 Socom and 5.56 cartridges, two powerful rounds for AR-15 rifles. Learn the pros and cons of each, the ballistics, the range, the cost, and …The 458 SOCOM makes for an amazing hog hunting and self-defense cartridge as well as just being fun to shoot in an AR-15. However, the 5.56 NATO has been the gold-standard AR chambering since its release in the 60's. The 458 SOCOM really helps increase the stopping power of the AR platform but it does so at the cost of magazine capacity, range ...Best Barrel Length for 458 SOCOM. The best barrel length for a 458 SOCOM is 16″ to achieve maximum powder burn and muzzle velocity. Barrels over 16″ will not increase velocity significantly because the 458 SOCOM round was optimized for barrels as short as 9.5″ and is popular in AR pistol builds. Best Barrel Length for 45 ACP A comparison of the .458 Socom and 5.56 cartridges, two powerful rounds for AR-15 rifles. Learn the pros and cons of each, the ballistics, the range, the cost, and …Dec 11, 2022 · A15-M .458 SOCOM Complete Upper. $645.99 $545.99. Choose Options. Atheris Rifle Co.- Custom AR15 and AR10 Rifles, Pistols, and Parts. The .50 Beowulf and .458 SOCOM use a .50AE parent case and are almost similar in overall length and case capacity. However, the .50 Beowulf is a straight case, the .458 SOCOM uses a slightly bottlenecked case design. The .50 Beowulf uses a slightly larger diameter bullet of .500 inches, whereas the .458 SOCOM uses a 0.458-inch diameter bullet.31 Okt 2019 ... 5.56 still wins for being more cost-efficient, but, at 10 rounds each, .458 packs quite a wallop.No, we’re talking 9mm, .45ACP,.300 Blackout, .338 Lapua, .458 SOCOM, .45-70 Government, and more. The performance speaks for itself. Test results have shown ratings in the low-120 dBs with .300 BLK while still remaining hearing safe with the mighty .45–70 GOV. You won’t find that versatility anywhere else!Dec 4, 2020 · GET YOUR CLOTHING HERE!!! - https://kentuckyballistics.com/The automatic weapons used in this video are registered machine guns that are legally owned by Fir... 1 Feb 2023 ... .458 Socom · 6.5-284 Norma .270 WSM .35 Whelen .303 British · View All ... As the content editor at Bulk Cheap Ammo, my name is Lisa, and I'm here ...The differences between 50 Beowulf vs 556 is the bullet diameter each cartridge fires, intended engagement ra, ... 5.56mm magazines and 3) It needed to be capable of firing at subsonic levels using su, 458 SOCOM vs 5.56: AR-15 Caliber Comparison by. Ammo.com. 458 SOCOM vs 556: Ammo.com examines how ada.., Full Auto .458 SOCOM!!!http://http://www.facebook.com/topshotdustinhttp://www.twitter.com/topshotdustinhttp://www.topsh, Product Info for SilencerCo ASR Muzzle Brake. This 3-port muzzle brake is compatible with all SilencerCo ASR Mount, Tactical Carbine Upper Half LAR-15M .458. .458 SOCOM Chamber. Learn More. Rock River Arms, Inc, Aug 1, 2015 · If you do go with a .458 SOCOM, for God's sake do not buy one of t, This Bushmaster .450 upper on a Remington AR-15 lower receive, Best Barrel Length for 458 SOCOM. The best barrel lengt, .458 SOCOM — Far more expensive and requiring a ne, For $20 off your next ammo purchase, go to https://ammo.c, Learn about the history, features, and advantages of the .45, Overall, not a bad choice at all for a side-charging AR-15. 3. Quarte, The primary difference between the 6.8 Western vs 6.8 SPC is in th, No, we’re talking 9mm, .45ACP,.300 Blackout, .338 Lapua, .458 , Best Muzzle Brakes & Compensators. 1. A2 Birdcage. S, The general purpose of developing the 458 SOCOM was to creat, The difference between 5.56 and .458 SOCOM 1.4K 82 82 co.