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Topic: The Best 5.56 Ammo of 2023 (Read 81 times) previous topic - next topic

The Best 5.56 Ammo of 2023

The Best 5.56 Ammo of 2023

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best 5.56 ammo, ar 15 ammo
Tyler Freel

The author fired more than 500 five-shot groups to test the best 5.56mm NATO and .223 ammo we could get our hands on


The post The Best 5.56 Ammo of 2023 appeared first on Outdoor Life.



                              

                   
best 5.56 ammo, ar 15 ammo
Tyler Freel

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            Best Overall
         

            black hills ammo mk262 mod 1-c 5.56 ammo, ar 15 ammo
         

            Black Hills Ammo 5.56mm NATO MK 262 MOD 1-C
         

           
               
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            Most Accurate
         

            nosler custom co*petition 77gn bthp match
         

            Nosler Match Grade .223 77-grain Custom co*petition BTHP
         

           
               
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            Best for Deer
         

            remington premier 55gn accutip 5.56 hunting ammo
         

            Remington Premier .223 55-grain Accutip
         

           
               
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It’s arguable that the 5.56x45mm NATO and .223 Remington are the most popular centerfire cartridges, by volume, in the United States today. The best 5.56 ammo is accurate and can fill multiple roles. It also depends on your application. A precision match load might be best for you, or maybe just dependable, cheap 5.56 ammo. Among centerfire cartridges, it dominates as the plinker-in-chief, and has been our standard military issue cartridge for decades. But it also excels in co*petition, hunting, training, and self defense applications. In-fact, there may not be a more generally useful cartridge on the books or in our gun cabinets. 





Although the 5.56mm NATO and the .223 Remington are slightly different cartridges—more on that later—both are ubiquitously referred to as 5.56. Hell, I do it myself. That’s why you’ll see so many .223 Remington loads in this test—and they’ll be referred to as 5.56 ammo. Try not to have a stroke. There is an excellent variety of 5.56 ammo available, which makes testing and determining the best 5.56 ammo a gargantuan task. I recorded over 500 5-shot groups from six rifles to see just how all this ammo would perform.





This will be a living document, with additional samples and data folded in down the road. This test of 23 different 5.56mm NATO and .223 Remington loads is an excellent starting point for selecting ammunition for a variety of applications, and it represents the general field well.









Match Ammo









Hunting and Defensive Ammo









Range and Practice









5.56 vs. .223 Remington: Are They Interchangeable?





If you’re an astute stickler for details, you’ve already noted that there is indeed a difference between the 5.56X45mm NATO cartridge and the .223 Remington. Although both cartridges are derivatives of the .222 Remington and have the same external dimensions, there are a couple key differences. 





A lot has been written on those differences in chamber design and pressures, but conventional lore boils down to one point: when used in some .223 chambers, the 5.56mm NATO cartridge can cause pressure that exceeds SAAMI specifications. 





Because of the co*monly-exercised interchangeable use of the 5.56mm NATO and .223 Remington cartridges, some barrel manufacturers are now chambering in .223 Wylde, which is designed to be a cross-co*patible chamber cut.





5.56 ammo groups
The .223 Wylde chamber is designed to acco*odate all 5.56mm NATO and .223 Remington ammo. Tyler Freel




Chary individuals will tell you that it’s safe to shoot .223 Remington ammo in a 5.56mm NATO chamber, but it’s not safe to shoot 5.56mm NATO ammo in a .223 Remington chamber. Generally, this is bunk. If you’re trying a new 5.56mm NATO load in your .223 chamber, check for pressure signs, sure, but in a modern rifle, you’re not likely to encounter any issues. I’ve fired a tremendous amount of military M855 ball and other 5.56mm NATO through regular old .223 chambers without so much as a flattened primer—including in this test. Pay attention, but proceed.





What Do Twist Rates Mean for Selecting the Best 5.56 Ammo?





The twist rate of your barrel can exclude certain ammunition based on bullet weight. Across the spectrum of 5.56mm NATO and .223 Remington rifles, you’ll see twist rates from 1:14 (1 twist in 14 inches of barrel length) to 1:7. 





Slower twist rates might be great for 40-, 50-, and 55-grain bullets, but won’t stabilize heavier bullets. An example of this is one of the rifles I used to supplement this test. It has a 1:9 twist Kreiger match barrel that will shoot lights-out with bullets up to 70 grains. It will not, however, shoot heavier 75-, 77-, or 80-grain bullets accurately.





The most co*mon contemporary twist rates for 5.56mm NATO and .223 Remington barrels are 1:7 and 1:8. A 1:8 twist barrel is capable of stabilizing any standard factory ammunition, including the popular 77-grain Sierra Matchking. As demonstrated by the service rifle that won me a distinguished rifleman badge many years ago, it’ll also shoot the ultra-long 80-grain Sierra Matchkings—although the 80- and 90-grain VLD match bullets are too long to fit in a standard magazine and must be single-loaded for an AR-type rifle. The run-of-the-mill mil-spec AR-15 barrel will have a twist rate of 1:7, making it capable of stabilizing any of the best 5.56 ammo you can find.





How We Tested the Best 5.56 Ammo





The Outdoor Life gun team takes pride in exercising a thorough and industry-leading protocol when testing guns and ammunition. Because a few groups through one or two rifles is too small of a sample size to tell you anything really useful, I went the extra mile. I requested, gathered, and bought all the ammunition I could reasonably manage, in a variety of styles to represent co*petition, recreational, hunting, and defensive applications. 





Test Rifles





I selected my test rifles to mirror what many shooters are using, and to provide a spectrum of barrel lengths, twist rates, and rifle styles. In total, I used six different rifles for this test. I fired each load through four of the rifles, and used two of them to gather supplementary data.





5.56 rifles
Primary test rifles from top to bottom: LSA TX15 DML, Ruger AR-556 MPR Proof, LSA TX15 MPC, Christensen Arms MPR. Tyler Freel




Ruger AR-556 MPR Proof Barrel 






  • .223 Wylde




  • 20-inch Proof carbon-fiber barrel




  • 1:8 twist





Lone Star Armory TX15 Designated Marksman Light 






  • .223 Remington (KWC chamber)




  • 20-inch Bartlein steel barrel




  • 1:7 twist





Lone Star Armory TX15 Multi-Purpose Carbine 






  • .223 Wylde




  • 16-inch Boss carbon-fiber barrel




  • 1:7 twist





Christensen Arms Modern Precision Rifle 






  • .223 Remington




  • 20-inch carbon-fiber barrel




  • 1:8 twist





Lone Star Armory TX4 Carbine (older)






  • .223 Remington




  • 16-inch Kreiger stainless-steel barrel




  • 1:9 twist




  • Was not used with bullets heavier than 69 grains





DIY Mil-Spec Build






  • 5.56mm NATO




  • 16-inch M4-profile barrel




  • 1:7 twist




  • Used as a reference point for several co*mon loads





Testing Protocol





The most important thing we want to know about the best 5.56 ammo is how it shoots, especially in a variety of rifles. My basic testing protocol was to fire at least two, but ideally four or five recorded groups from 100 yards with each type of ammunition, through each of the first four primary rifles. My total group volume per load varied a bit due to the ammo I had available and consistency of performance. I typically fired fewer groups with ball ammo that exhibited average performance and consistency than I did with match ammo or ammo that displayed above-average accuracy. Shooting extra groups gave a fine-tuned average for the more accurate loads, but for mediocre-shooting loads, it was unlikely to move the needle much.





I also fired groups with ammunition that used 69-grain and lighter bullets through the 1:9-twist Kreiger-barreled TX4 in addition to the four primary rifles. I recorded groups with some standard 5.56 ammo like the MK 262 MOD 1-C and M855 through the mil-spec DIY rifle to use as a reference point as well. 





accurate 5.56 ammo
Ammo that produced tight groups was treated with added scrutiny and additional verification. Tyler Freel




I fired five-shot groups, without pausing between shots in a string. Between groups, I rotated rifles so that barrels could cool. At the end of testing, I fired 10-shot, continuous-string groups at 300 yards with some of the most accurate rifle and load co*binations to see how well they would hold on longer strings at longer distances.





The results of the best 5.56 ammo test are in a chart.




Best 5.56 Ammo: Reviews and Reco*mendations





This test was one of tight margins. Many of the loads I tested were neck-and-neck, but here are my favorites.





Best Overall: Black Hills Ammo 5.56mm NATO MK 262 MOD 1-C




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Key Features






  • 77-grain Sierra Matchking w/cannelure




  • Annealed brass




  • Crimped primer




  • Velocity: 2,750 feet per second




  • 100-yard 5-shot accuracy average:  .953 inches (43 groups)




  • Most accurate rifle and average group size: LSA TX15 DML, .814 inches




  • 300-yard 10-shot accuracy average: 2.827 inches




  • Cost per round: $1.25





Pros






  • Excellent accuracy




  • Versatile load




  • Quality co*ponents




  • Good for long-range





Cons






  • Limited availability




  • Requires 1:8 twist barrel





One of the best all-around 5.56 loads is a true 5.56mm NATO cartridge—the MK 262. The load has its origins in special operations and was designed for better accuracy and downrange performance than the standard-issue M855 ball. It’s designed as AR 15 ammo and uses a 77-grain Sierra Matchking bullet, which is a juggernaught of across-the-course co*petition, but this version which is like the military-issued MK262 features a canellure on the bullet to accept a crimp. The standard 77-grain SMK does not. 





Unsurprisingly, the MK262 MOD 1-C ammo was accurate across all of the test rifles, and the heavy bullet holds onto that accuracy downrange. In my service rifle days, 77-grain SMK handloads were the ticket at 200- and 300-yards, and could even shoot well at 600 yards if I was short on 80-grain VLD’s. This ammo shoots well in both carbines and longer-barreled rifles, and I saw no pressure signs when shooting it through the Christensen MPR chambered in .223 Remington.





Best Value: Freedom Munitions .223 69-grain HPBT Match




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Key Features









Pros









Cons









Freedom Munitions brought a ray of sunshine to our 2023 gun test when they sent us a couple cases of their very affordable match 6.5 Creedmoor ammunition. It was so accurate and consistent that I had to try some here too. Similarly, this 69-grain Match BTHP load was a stellar performer. It ranked third out of the 23 tested loads in accuracy, and was only short of the top spot by .044 inches in average group size. That’s arguably within a cumulative margin of error of my own measuring of all those groups.





This load shot well in just about every rifle and exceptional in some. It averaged .658 inch groups in the 1:9-twist TX4, and even held a 1.044-inch average in the DIY mil-spec AR carbine. Although the performance was stellar, it’s even more impressive when considering how affordable the ammo is. It outshot ammo like Federal’s Gold Medal Match—and rings up at half the cost.





Most Accurate: Nosler Match Grade .223 77-grain Custom co*petition BTHP




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Key Features









Pros









Cons









The Nosler 77-grain custom co*petition averaged out as the most accurate 5.56 ammo in the test. It averaged a screaming .687 inches in the Christensen MPR, and even held under an inch in the 16-inch LSA TX15 carbine. At 300 yards out of the Christensen rifle, it held at .84 MOA for non-stop strings of 10 shots—an impressive feat.





As dominant and popular as the Sierra Matchking bullets are among shooters and ammunition manufacturers, Nosler’s match ammo brings the goods. In this case, it out-shines all others. It’s a load that requires a 1:8 or tighter twist barrel, but like the MK 262, it would be excellent defensive carbine ammo and would be a solid option for varmints.





Best for Larpers: Lake City 5.56mm NATO M855 Ball, 62-grain Green Tip




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            m855 5.56 green tip ammo
                     

                 

           

 

         

       

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Key Features









Pros









Cons









M855 ball, also referred to as “5.56 green tip ammo,” is the quintessential 5.56 ammo. It’s a 62-grain FMJ bullet with a steel core and characteristic green painted tip. M855 is standard issue. Its accuracy is mediocre, but a good benchmark. It averaged group sizes of about an inch at best and printed several groups over 3 inches. In my mil-spec 16-inch barrel, it averaged 2.862 inches for 5 shots at 100 yards.





There are frankly better options for both practice, hunting, defensive, and duty ammo in this test, but because it’s standard-issue, M855 5.56 green tip ammo is a benchmark that needs to be included. The steel-core bullet will damage your expensive AR500 targets and cause potentially dangerous ricochet, so stick to regular FMJ or frangible. If you’re one of many passionate shooters who want everything to be true-to-issue, you need some green tip AR 15 ammo in your foot locker.





Best for Varmints: Freedom Munitions .223 55-grain V-Max




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Key Features









Pros









Cons









This was the most accurate 5.56 ammo for predators and varmints, and also the most affordable. Like the Freedom Munitions 69-grain match load, this ammo is accurate in a variety of guns. Between the 16-inch TX4, the TX15 carbine, and the TX15 DML, I recorded 14 groups. Only one of those groups measured more than an inch. It averaged just over an inch in the Ruger and Christensen.





The accuracy was great, but again, the price of the Freedom Munitions ammo is what really grabbed my attention. It’s half the price of many other co*parable varmint loads, and the 55-grain Hornady V-Max is a proven varmint buster that I’ve killed many coyotes with. It would serve as a great home defense round too, since the rapidly-expanding bullet won’t over-penetrate.





Best for Deer: Remington Premier .223 55-grain Accutip




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Key Features






  • 55-grain Accutip 




  • .223 Remington




  • Velocity: 3,240 feet per second




  • 100-yard 5-shot accuracy average: 1.167 inches (30 groups)




  • Most accurate rifle and average group size: Christensen MPR, .848 inches




  • Cost per round: $2.00





Pros






  • Good accuracy




  • Mechanically fastened jacket for weight retention on medium-sized game




  • Excellent expansion





Cons






  • Not as durable as monolithic bullets





An excellent all-around hunting bullet, and great option for game like deer is the 55-grain Accutip from Remington. It’s a polymer-tipped bullet that has a tapered jacket that’s mechanically fastened to the core. This allows rapid initial expansion, but good weight retention and penetration. It’s going to require more careful shot placement than monolithic bullets like the Nosler E-Tip and Barnes TSX, but it’s certainly potent enough to get the job done on deer.





Best Lead-Free Ammo: Nosler .223 55-grain Expansion Tip




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Key Features






  • 55-grain Nosler Expansion Tip monolithic bullet 




  • .223 Remington




  • Velocity: 3,100 feet per second




  • 100-yard 5-shot accuracy average: 1.382 inches (21 groups)




  • Most accurate rifle and average group size: LSA TX15 DML, .825 inches




  • Cost per round: $2.15





Pros






  • Good accuracy




  • Lead free




  • Balanced expansion and penetration




  • Excellent weight retention





Cons






  • Accuracy can vary rifle-to-rifle





Lead-free bullet technology has improved dramatically in the past 20 years, and there are several great options on the market for hunters now. Nosler’s Expansion Tip is a polymer-tipped all-copper bullet that’s designed for immediate expansion, but to maximize weight retention too. It’s an excellent bullet for predators like coyotes, but also larger game like deer. Overall accuracy was good, but it seemed that this ammo shot either very well or very mediocre in rifles, with groups ranging from the upper 1-inch range, to consistently sub-inch, depending on the rifle. Although the BHA Barnes TSX load averaged a hair better in accuracy, its availability is limited right now, so the E-Tip gets the nod.





Best Ball Ammo: Winchester USA Target .223 55-grain FMJ




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Key Features






  • 55-grain FMJ




  • .223 Remington




  • Velocity: 3,240 feet per second




  • 100-yard 5-shot accuracy average: 1.836 inches (13 groups)




  • Most accurate rifle and average group size: LSA TX4, 1.346 inches




  • Cost per round: $0.65





Pros






  • Good for practice and plinking




  • Works with any twist rate




  • Readily available





Cons






  • Only ideal for practice and target shooting





Ball ammo is the bread and butter for scores of 5.56 and .223 shooters. It’s the most affordable option for 5.56 bulk ammo if you’re into high-volume practice and plinking. Ball ammo is simple and straightforward, and most of it is pretty consistent. Most of the ball ammo I tested averaged 1.5- to 2-inch groups at 100 yards, and this Winchester 55-grain FMJ was right at the top of the pack. It was edged out in accuracy by one other load, but because of its widespread availability, low cost, and co*patibility with steel and self-healing targets, it’s one of the best options.





Best for Shooting Steel: Freedom Munitions .223 42-grain Zinc-core FMJ




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Key Features






  • 42-grain zinc core FMJ




  • .223 Remington




  • Velocity: 3,500 feet per second




  • 100-yard 5-shot accuracy average: 1.397 inches (19 groups)




  • Most accurate rifle and average group size: Ruger AR-556 MPR Proof, 1.184 inches




  • Cost per round: $0.47





Pros






  • Lead free




  • Works with any twist rate




  • Great for steel targets




  • Very affordable





Cons






  • Only ideal for practice and target shooting





Standard steel rifle targets can be shot with most regular FMJ ammo, but it can sometimes shower the shooter and bystanders with spall fragments—tiny pieces of bullet and jacket material. Frangible ammunition is the most ideal option for shooting steel targets, especially at close range, and although this zinc-core FMJ ammo isn’t frangible, it is lead free and fragments nicely. When shooting high volume indoors or at closer range, it will reduce the amount of lead you’re exposed to.





This ammo isn’t just great for steel though, it’s one of the best 5.56 ammo ball loads I tested. It was the most accurate ball