5.56 effective range

A 5.56 AR can shoot quite far, depending on the rifle and the ammunition used. Most AR-15s are chambered for 5.56x45mm NATO, which has a maximum effective range of around 500 meters (1,640 feet). But with the right rifle and ammunition, a 5.56 AR can shoot much farther than that. Shortcuts.

5.56 effective range. The 5.56 cartridge is great for hunting smaller game and for self-defense. 7.62x39 vs 5.56: Pros & Cons: The 7.62x39 cartridge is more durable and consistent but less economical. The 5.56 cartridge has greater velocity but more fragmentation. 7.62x39 vs 5.56: Performance: The 7.62x39 cartridge is widely used with the AK-47 and has more stopping ...

When shooting the 55 grain 5.56 full metal jacket ammunition, the effective range is about 500 yards, before the shooter needs to apply significant holdover or loss of ballistic energy. The 16" barrel, being slightly longer, provides a muzzle velocity of 2800 …

Effective range can vary, but premium 77 grain hollow point bullets can provide effective hunting performance out to 300 yards or more. Are there specific hunting regulations for using the 5.56? It’s important to check local hunting regulations to ensure that using a 5.56 for hunting is legal in your area.Jul 27, 2022 ... Comments568 ; The .45 acp Ruger LC Carbine | It Keeps Getting Better. Colion Noir · 277K views ; What Is The Effective Range Of 5.56?The cartridge is both light on the shoulder and light on the wallet. The .223 Rem. only produces 2 to 4 foot-pounds (ft.-lbs.) of recoil energy, which is about six times less than a .270 Win. That’s ideal for new and young hunters. Removing the potential for flinching will produce better accuracy in those less experienced or small of stature.A: The maximum effective range for deer hunting with a 5.56 cartridge depends on several factors, including the specific ammunition used, the shooter’s skill level, and environmental conditions. Generally, most hunters consider 300 yards to be the maximum practical range for a clean, ethical kill with a 5.56 cartridge on deer-sized game.HELSINKI, Feb. 24, 2021 /PRNewswire/ -- Ponsse launches a completely modernised range of Scorpion harvesters, which meets all the requirements of ... HELSINKI, Feb. 24, 2021 /PRNew...The M4A1 has an effective range of 150 meters (160 yds) or less and has a maximum effective range of about 500 to 600 meters (550–660 yd). Accessories. All that being said, the troops believe the M4 works. A 2006 CNA Corporation report surveyed U.S. Army combat veterans of Iraq and Afghanistan for their opinions on modern infantry …

Shooting. That’s about it. Technically, M855 is better at penetrating barriers like thin walls and car doors than normal 55gr lead 5.56 is, but this really isn’t an attractive characteristic for most normal shooters. This is bad for home defense since you run a much higher risk of overpenetration through walls.Advertisement A gas range cabinet comes apart very easily. Here's how: Step 1: Take out the screws that hold the panels, and pull off the control knobs. On the control panel the kn...What is the maximum effective range of a 5.56? The maximum effective range of a 556 is 1,000 yards for target shooting and 600 yards for hunting. What is the lethal velocity of …The effective range doesn’t mean the bullet fire with max damage. It means a distance at which the bullet hit at high accuracy. You can understand with an example that .45 ACP and 9mm bullet has a stopping power so it drops faster than standard ar-15 rifle round. On the other side, 5.56 ammo can hit a distance of 600 meters but it is ...Combating Concussion in 5.56 NATO Ammo for Home Defense. The concussion that is produced by firing full-power 5.56 NATO ammunition in tight confines can be deafening and disorienting to ...The Toyota bZ4X, the first electric vehicle under the automaker’s new bZ brand, will come to the U.S. in mid-2022 with an estimated range of up to 250 miles. The vehicle is nearly ...Jul 18, 2023 · Note that the 5.56 cannot be shot on a 223 chamber but the 223 chamber can be shot from a 556 due to the pressure difference. The 556 packs more pressure and gun powder, meaning that it travels faster and is more accurate. Although the 223 can be shot from the 5.56 chamber, it will attain a lower speed due to its lower pressure.

And he has a fix. Elon Musk suggested today that “range anxiety”—the malady that afflicts electric car drivers fearing that they will run out of charge in a bad neighborhood, at ni...The two most popular bullet weights for 5.56 are 55 and 62 grains. From our chart you will see that the best twist rate for 55 grain ammunition (e.g. PMC M193) is 1:12” or 1:10”. The best twist rate for 62 grain ammunition (e.g. M855) is 1:8”, 1:9” or 1:10”. (We would advise sticking to the faster of the three best twist rates for 62 ...Short barrel 11.5 and a heavy 77 bullet will probably give you around a 20 inch drop at 300 yds. If you’re fine with that then it’s ok. Heavy loaded 5.56 generally uses a slow-burning powder to get max velocity. So a short barrel isn't going to be doing you any favors. Can you make hits at 300yds, yes 100%.It prompted AXTS’s latest rifle based on Buck’s design input and extensive testing. Buck Doyle’s dream AR, the SPR, was designed for practical application out to the limits of the 5.56mm cartridge. It started with an MI-T556, adding a few touches including a 17.5” barrel and full-length, custom hand guard to match.What is the effective range of a 5.56 bolt action rifle? The effective range of a 5.56 bolt action rifle typically extends up to around 500 yards, depending on the specific rifle and ammunition used. Can 5.56 bolt action rifles be used for long-range shooting?

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The round must be suitable for close- and medium-range conflicts, such as house-to-house urban engagements. Likewise, it must function properly in long-range environments, such as those found in the mountains of Afghanistan. ... “The 5.56 is very good for that.” ... the 5 56 round was marginal from the get-go! Tales of US troops …EFFECTIVE RANGE: 800m, point target; MAXIMUM RANGE: 3600m; TWIST RATE: 1:7″ TRIGGER PULL: 7.9 lb. COLOR: Matte black non-reflective finish; The Implications of the M249 Specifications Caliber. The 249 uses the standard 5.56×45mm NATO (North Atlantic Treaty Organization) round. This round is of a rimless bottlenecked intermediate …However, it has an effective range of about 600 yards and retains enough velocity to be used for 1,000-yard targets with a good rifle in the right hands. The standard twist rate for 5.56 NATO chambered rifles is 1:7. A barrel length of 16 inches is considered ideal for this ammo, however, a wide range of options are available out there. ...With a 500-yard effective range, low recoil, a flat trajectory and spacious magazine capacity, the 5.56 NATO is a no-brainer for many marksmen. 5.56 mm vs 7.62 mm.

If instead you use .223 Winchester ammo offered by Winchester, Remington, PMC or other companies, your velocity could be 100 fps lower than M193, as .223 is loaded to a lower pressure than 5.56 NATO. If you are using Wolf, Brown Bear or Silver Bear .223 ammo, your velocities could be 150 fps slower. That can reduce …Want something that packs a greater punch than a 5.56 and is still accurate and effective at longer distances? The 6.5 Grendel is a fantastic caliber for hun...Feb 16, 2024 · The effective range of an AR-15 5.56 rifle typically varies between 400 to 600 yards, depending on factors like barrel length, ammunition type, and shooter skill. However, the weapon itself can technically shoot much farther, reaching distances of up to 3,000 yards, albeit with significantly reduced accuracy. 5.56 NATO. The .222 Remington was designed to handle game of up to 40 pounds out to 200-250 yards. The current 5.56 NATO is the M855 (US designation) for the SSS109 specification. It fired a 62-grain steel-cored bullet to pass the NATO required to penetrate helmets at long range. This from a machine gun.The Grendel does have a much longer effective range than any other AR-15 cartridge. Although the 6.5 Grendel, being a heavier bullet, has double the recoil and slightly less capacity than the 5.56, it is still more effective in long-range shooting than the 5.56, which has issues at longer ranges and barriers penetration. ...The mountains. Sep 4, 2023. #1. I’ve been looking around for some load data for 5.56 69 - 77 grain bullets. Specifically for 556 pressures not 223 Remington. I’ve been looking around for load data on this, but it seems that most people provide 223 Remington data, which is a bit cooler then 556 data. It’s also hard to distinguish between ...5.56 ammunition typically has flatter trajectories and better long-range performance compared to some other rifle calibers. What is the muzzle velocity of a 5.56 round? The muzzle velocity of a 5.56 round can vary depending on the specific load, but it is generally around 3,000 feet per second.When it comes to the .223 and a 5.56, most users will generally operate under 250 yards. We don’t really need to talk about the nuances of those cartridges at that range because at that range the following is possible with those cartridges: Stopping a defensive threat of any human size.The .308 and 5.56mm cartridges are both capable of great accuracy. The M118 and MK 262 are long range service loads for each cartridge respectively. Tyler Freel. 5.56 NATO. The story of the 5.56 NATO cartridge is similar in nature to the 7.62×51 NATO and was derived from the development of the .223 Remington.

And he has a fix. Elon Musk suggested today that “range anxiety”—the malady that afflicts electric car drivers fearing that they will run out of charge in a bad neighborhood, at ni...

Its lead-free composition breaks new ground for American military ammunition; however, it does not increase the 5.56 mm’s effective range. Only a totally new cartridge can accomplish that. Why ...A 5.56 AR can shoot quite far, depending on the rifle and the ammunition used. Most AR-15s are chambered for 5.56x45mm NATO, which has a maximum effective range of around 500 meters (1,640 feet). But with the right rifle and ammunition, a 5.56 AR can shoot much farther than that. Shortcuts.Oct 4, 2023 · The problem is that 5.56 ammunition only has an effective lethal range of roughly 300 meters. If the enemy is beyond that distance and wearing body armor to boot, you have a rifle that can’t neutralize the threat in time. These have become pretty easy to find these days At close range, the 5.56 vs. 9mm slugs will be able to devastatingly wound your target. Overall accuracy, however, and long-range terminal ballistics will need to be sacrificed for the terminal stopping power of the 9mm bullet. ... If I were to talk sorely on stopping power, the effective range and energy of rifle bullets over handguns is ...The mountains. Sep 4, 2023. #1. I’ve been looking around for some load data for 5.56 69 - 77 grain bullets. Specifically for 556 pressures not 223 Remington. I’ve been looking around for load data on this, but it seems that most people provide 223 Remington data, which is a bit cooler then 556 data. It’s also hard to distinguish between ...Typical factory loads for 5.56 range between 35 and 77 grains, however the 55 gr and 62 gr are the most common. Ammo for the 6.8 SPC can range between 75 and 120 grains, …2. What is the effective range of NATO 5.56 for hunting? The effective range for hunting with NATO 5.56 is typically around 200 to 300 yards. 3. Is NATO 5.56 suitable for hunting small game? Yes, NATO 5.56 can be effective for hunting small game like rabbits, squirrels, and coyotes. 4. Can the NATO 5.56 round be used for hunting wild …Long range shooting makes you appreciate calculators! On up the hill to 718-yards. Another 5.5 MOA and I was able to make 3 hits consecutively on this very small steel (about a 12”x12” plate). The next target on the range is a 24” round plate at 813-yards. This required a total of 28 MOA of elevation.

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1,957. Jul 14, 2020. #7. Go with 75 grain or 77 grain. It's been researched out a ton. FWIW I have a 10.5" 5.56 as well. With good ammo you have about a 50 yard extremely effective round when using 75 or 77 grain ammo. After 50 yards it still wouldn't be nice to get hit by but it's "less effective".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 …SIG Sauer’s engineers had to redesign the Rattler away from the original gas-port design and develop a gas trap approach to fit and effectively cycle the 5.56 NATO cartridge and all of its loadings. Available as both a pistol or short-barreled rifle (SBR), there is a caliber-exchange kit to swap between .300 BLK and 5.56 NATO.The effective range of 5.56×45 for hunting is generally around 200-300 yards, depending on the specific load and the shooter’s skill level. Is 5.56×45 suitable for hunting larger game? While some hunters have successfully taken down larger game with 5.56×45, it is generally considered best for small to medium-sized game.Long range shooting makes you appreciate calculators! On up the hill to 718-yards. Another 5.5 MOA and I was able to make 3 hits consecutively on this very small steel (about a 12”x12” plate). The next target on the range is a 24” round plate at 813-yards. This required a total of 28 MOA of elevation.The effective range doesn’t mean the bullet fire with max damage. It means a distance at which the bullet hit at high accuracy. You can understand with an example that .45 ACP and 9mm bullet has a stopping power so it drops faster than standard ar-15 rifle round. On the other side, 5.56 ammo can hit a distance of 600 meters but it is ...Feb 16, 2024 · What is the effective range of 5.56 ammo? The effective range of 5.56 ammo varies depending on factors such as barrel length and bullet design. On average, it is effective up to about 500 meters, but individual firearms may have different capabilities. However, the 7.62 suffers from a poor trajectory as the less aerodynamic bullets hemorrhage FPS past 150 yards and limits the effective range of the round. The 5.56x45mm NATO cartridge was designed with riflemen in mind as it is a very flat shooting cartridge that is effective at both short and long-range with low felt recoil. Its lightweight ...What is the effective range of 5.56×45? The effective range of 5.56×45 depends on various factors, but it is generally considered effective up to 500 meters. Is 5.56×45 suitable for hunting? 5.56×45 can be used for hunting small to medium-sized game, but some jurisdictions may have specific regulations regarding its use.It prompted AXTS’s latest rifle based on Buck’s design input and extensive testing. Buck Doyle’s dream AR, the SPR, was designed for practical application out to the limits of the 5.56mm cartridge. It started with an MI-T556, adding a few touches including a 17.5” barrel and full-length, custom hand guard to match.Aug 26, 2020 · The 77 SMK is not a great close range, urban, or combat load and it was never designed to be. But, the longer the range, the better the performance. A reasonable velocity for a 16” barrel for the 77gr would be around 2650fps...ish. Quickload 77 grain SMK, 24.5 grains Varget, 2777 fps, 20 inch barrel ….

A: The maximum effective range for deer hunting with a 5.56 cartridge depends on several factors, including the specific ammunition used, the shooter’s skill level, and environmental conditions. Generally, most hunters consider 300 yards to be the maximum practical range for a clean, ethical kill with a 5.56 cartridge on deer-sized game.Tesla is breathing life back into its long-range Model 3, which reappeared on its website earlier this week with a steep price drop. After a nearly nine-month hiatus, Tesla has reo...The effective shooting range of 6.5 Grendel ammois 800 yards, although a skillful shooter can extend it beyond 1,000 yards. The effective shooting range of 5.56 ammo is 500 yards. The effective shooting range of .223 ammo is 400 to 600 yards. 6.5 Grendel vs. 5.56 vs. .223: Bullet Variety.SIG Sauer’s engineers had to redesign the Rattler away from the original gas-port design and develop a gas trap approach to fit and effectively cycle the 5.56 NATO cartridge and all of its loadings. Available as both a pistol or short-barreled rifle (SBR), there is a caliber-exchange kit to swap between .300 BLK and 5.56 NATO.The AR-15 is an accurate, easy to shoot rifle that can serve a variety of purposes. One of the reasons for this popularity is because the typical AR-15 uses either .223 or 5.56 NATO ammunition ...Jul 20, 2023 · Crunching the numbers for a standard 55-grain bullet exiting an AR-15 barrel at about 3,200 feet per second, this equates to a maximum range of approximately 3,000 yards, or about 1.7 miles. How Not to Aim an AR-15. Photo Source: SOFREP. However, it's crucial to remember this isn't a practical shooting distance. From twist rate to steel Vs. brass to what exactly “XM” and “M” really mean, we got that and the 6 best 5.56 ammo for your AR coming right up! .223 Remington Vs. 5.56 NATO Vs. .223 Wylde. The short version is that any barrel marked 5.56 NATO or .223 Wylde can safely shoot BOTH .223 Rem and 5.56 NATO.The max effective range is between 500-600 meters. You should be fine with a good scope. Posted: 9/16/2012 8:55:50 PM EDT [#3] It will do it, and those are very accurate CL barrels. ... IMO a 2.5-10X scope is perfect for the .223/5.56. Plenty of magnification out to the bullets effective range. Like was said before: you really only …The heavier duty 7.62 NATO is still used in the military due to the extra power and range it offers. An M14 hard at work in Afghanistan. When comparing the 5.56 M885A1 load and the 7.62 NATO M80 round, we see the big differences upfront. 7.62 retains over 1,700 foot-pounds of energy at 500-yards versus 5.56 which hits 950 foot-pounds at 500-yards. 5.56 effective range, The effective range of an AR-15 5.56 rifle typically varies between 400 to 600 yards, depending on factors like barrel length, ammunition type, and shooter skill. However, the weapon itself can technically shoot much farther, reaching distances of up to 3,000 yards, albeit with significantly reduced accuracy., Barometric pressure: 30.12 inches of Hg. Elevation: 950 feet above sea level. The muzzle velocity for the 10-shot string of the Black Hills 5.56mm MK262 Mod 1 ammunition fired from the 20” Colt barrel was 2848 FPS with a standard deviation of 10 FPS and a coefficient of variation of 0.35%., Its lead-free composition breaks new ground for American military ammunition; however, it does not increase the 5.56 mm’s effective range. Only a totally new cartridge can accomplish that. Why ..., Jul 9, 2023 ... Everyone argues but few do, today we put our money where our mouth is and perform some testing on different barrel lengths to find the best ..., , The M4A1 has an effective range of 150 meters (160 yds) or less and has a maximum effective range of about 500 to 600 meters (550–660 yd). Accessories. All that being said, the troops believe the M4 works. A 2006 CNA Corporation report surveyed U.S. Army combat veterans of Iraq and Afghanistan for their opinions on modern infantry …, What is the effective range of 5.56 NATO? The effective range of the 5.56 NATO round is typically around 600 yards, but it can vary depending on the specific firearm and conditions. Can a .223 firearm shoot 5.56 NATO? Most .223 firearms can safely shoot 5.56 NATO ammunition, but it’s important to check with the manufacturer to ensure ..., When it comes to the .223 and a 5.56, most users will generally operate under 250 yards. We don’t really need to talk about the nuances of those cartridges at that range because at that range the following is possible with those cartridges: Stopping a defensive threat of any human size., 20 Inches or Longer. ArmaLite’s original 1956 design for the AR-15 incorporated a 20-inch barrel and a rifle-length gas tube, and it could even be argued that a 20-inch barrel offers optimized ballistic performance for the 5.56 NATO cartridge – M855 “green tip” projectiles reach the 3,000 fps velocity breakpoint out of a 20-inch barrel ..., Barometric pressure: 30.12 inches of Hg. Elevation: 950 feet above sea level. The muzzle velocity for the 10-shot string of the Black Hills 5.56mm MK262 Mod 1 ammunition fired from the 20” Colt barrel was 2848 FPS with a standard deviation of 10 FPS and a coefficient of variation of 0.35%., Feb 18, 2024 · The effective range of 5.56 NATO is typically around 600 yards, though this can vary depending on the specific firearm and ammunition used. Is 5.56 NATO the same as .223 Wylde? No, while .223 Wylde can safely fire both 5.56 NATO and .223 Remington, it is a specific chamber design that aims to improve accuracy with both calibers. , A simple performance review of the S&W MP15 AR pistol chambered in 5.56/.223 Rem. Range footage is included to show potential accuracy, and different ammunit..., The .300 BLK has easily been the most successful new caliber in the last 20 years. Besides the easy conversion between 5.56 and .300 BLK, the .300 BLK does a lot the 5.56 can’t. First off, it’s a very versatile load with projectiles weights ranging from 110 grains to 220 grains. (L to R) 5.56 NATO, .300 BLK, .30 Carbine., Short barrel 11.5 and a heavy 77 bullet will probably give you around a 20 inch drop at 300 yds. If you’re fine with that then it’s ok. Heavy loaded 5.56 generally uses a slow-burning powder to get max velocity. So a short barrel isn't going to be doing you any favors. Can you make hits at 300yds, yes 100%., United Airlines has jumped on an order for the long-range Airbus A321XLR jets, opting for a partial approach to of replacing just its Boeing 757s while putting off a replacement fo..., What is the effective range of a 5.56 bullet? The effective range of a 5.56 bullet is typically around 600 yards. Are 5.56 bullets suitable for hunting? Yes, 5.56 bullets are commonly used for hunting small to medium-sized game. Can a 5.56 bullet be used for self-defense?, Range Rover is one of the most iconic and luxurious vehicles on the market today. Whether you’re looking for a new or used Range Rover, it’s important to find a reliable and truste..., Our first choice for 5.56 ammo is PMC’s X-TAC XM193 55gr because it’s likely in stock, usually the more affordable option, and has always gone bang for us. PMC X-TAC 5.56. Its internal designation is 5.56X and it closely mimics the US military’s M193 ammo specs without the price hike., From twist rate to steel Vs. brass to what exactly “XM” and “M” really mean, we got that and the 6 best 5.56 ammo for your AR coming right up! .223 Remington Vs. 5.56 NATO Vs. .223 Wylde. The short version is that any barrel marked 5.56 NATO or .223 Wylde can safely shoot BOTH .223 Rem and 5.56 NATO., The 5.56 caliber rifle is superior to other types of rifles due to its lighter weight, lower recoil, higher velocity, accuracy at mid-ranges, the maneuverability of shorter-barreled versions, and reliability. What kind of accuracy can I expect from a 5.56 rifle? The effective range of a 5.56 for target shooting is 500 yards., The max effective range for a 5.56 in Vietnam when establishing a defensive position was 300 yds for a good reason. Another words when the bad guys are 300 yds out that is when the 5.56 rifleman engaged them. Current issue ammo has greater reach, true, but not much. Before I retired the need for an effective round for ranges greater than that ..., The effective range of an AR-15 — the distance at which it can shoot with precision — is influenced by a confluence of factors, including the rifle's construction, the type of ammunition used, and the shooter's proficiency. Generally, a standard Mil-spec AR 15 chambered in .223 has an effective range hovering between 400 and 600 yards., What is the maximum effective range of 5.56 self-defense ammo? Most 5.56 self-defense ammo is effective within 100-200 yards, depending on the specific round and firearm. What is terminal performance in 5.56 self-defense ammo? Terminal performance refers to how a bullet expands, penetrates, and transfers energy upon …, What is the effective range of the 7.62x39mm round when used in an AK-47? The effective range of the 7.62x39mm round when used in an AK-47 is about 300 yards. What is the effective range of a 7.62x39 round? The effective range of a 7.62x39 round is 400 yards for military use. Written by., What is the maximum effective range of a 5.56? The maximum effective range of a 556 is 1,000 yards for target shooting and 600 yards for hunting. What is the lethal velocity of 5.56 ammo? The lethal velocity of 5.56 ammo is about 600 fps., The 223/5.56 vs 7.62x39mm debate has raged for over 50 years with no end in sight. The 5.56x45mm NATO and 7.62x39mm are both great, but the better choice is. ... In short, they wanted an intermediate cartridge with more power and a longer effective range than a pistol cartridge, but without the power and recoil of a full-powered rifle cartridge, An over-range microwave needs to be a minimum of 13 inches between the range and microwave and at least 66 inches above the floor. The minimum distance between the stove top and th..., BARREL LENGTH 11.5 in (29.0 cm) BORE CHARACTERISTICS Hard Chrome Lined, 6 Lands & Groves, 1 Twist in 7 in. (178 mm), Right Hand. METHOD OF OPERATION Gas; Direct system; Locking bolt. MUZZLE VELOCITY 2611 ft/sec (796 m/sec) MUZZLE ENERGY 1270 Joule. EFFECTIVE RANGE 600 m. FRONT SIGHT …, The advertised maximum effective range of both the M14 with a 150 gr., 7.62 mm NATO cartridge and the M16’s 62 gr., 5.56 mm M855 NATO cartridge was 460 meters. This equal clas-sification is odd considering the dramatic difference in cartridges. “Effective” is the key word. In this instance, it denotes the maximum range a projectile is ..., Effective range can vary, but premium 77 grain hollow point bullets can provide effective hunting performance out to 300 yards or more. Are there specific hunting regulations for using the 5.56? It’s important to check local hunting regulations to ensure that using a 5.56 for hunting is legal in your area., What is the effective range of the AAC 5.56 NATO Ammo 77 Grain Sierra MatchKing HPBT? The effective range of this ammunition can vary depending on various factors, such as barrel length, atmospheric conditions, and individual shooting skills. However, it is known to deliver excellent accuracy and performance up to distances of 500 yards and ..., Highest grain 223 bullet. 5.56 NATO bullet drop. 556 NATO dimensions. M193 vs M855. 223 Meaning. What is a NATO round? Brief Histories of 223 and 556. Can you …, And again, it is interesting to compare these two cartridges as the rounds move past the 100 yard mark. As they continue, the 7.62×39 rounds tend to lose energy at a much higher rate than the 5.56×45 rounds. From 200 yards out to 1,000 yards, there is less than 100ft.lbs difference between 5.56×45 Vs 7.62×39 averages.