300-yard D/D/E: -1.7/5.3/1403 600-yard D/D/E: -56.3/23/946 800-yard D/D/E: -135/44/714 The statistics shown above demonstrate the advanced speed capabilities of the 6mm ARC. Not much info out there on them. Since this article is focused on the performance of these cartridges for hunting, I didnt include any ballistic data past 500 yards in the table above. 260 Remington vs 6.5 Creedmoor vs 6.555 Swede. Shooters also cannot use bullets larger than .308 or with a velocity higher than 3,200 feet per second. It's a good compromise in efficiency (a 105 going 2970fps w/34.8gr of Varget) good barrel life plus way easier on the brass. Wait til after hunting season? Other shooters took notice of how well the rifle and cartridge performed during PRS competitions that year and began ordering 6mm Creedmoor rifles from Gardner. How does this new 6mm improve on the performance of the 6mm Creedmoor or the 243 ? However, the extra recoil is not enough to make the Creedmoor unmanageable for most shooters. At 1,000 yards, the 6mm Creedmoor drifts about a foot more than the 6 . Or does it have the staying power necessary to compete with more established 6mm hunting cartridges like the .243 Winchester? According to this data that seems possible. Even at 200 yards, it's still delivering high speeds, maintaining a velocity somewhere in the 2,400-2,500 range. Hornady recommends 1:9 twist or faster for its 105-grain A-Max and BTHP Match. Top Precision Rifle Shooter Bryan Zolnikov Talks With LoadDevelopment.com. And max velocity can be achieved with stick powders in CM. It is also much harder to control on full-automatic. As the 6mm ARC factory load is loaded for the lower pressure AR platform. It may not display this or other websites correctly. Image shows 6.5 Grendel cartridge, parent case of the 6mm ARC. I used the Hornady Ballistic calculator and Shooters Calculatorto compare wind drift, the range each bullet goes subsonic, and recoil for the cartridges. When you use the link above to shop for one of the products, we receive a small commission from the sale, at no extra cost to you. What bullet it takes and stabilizes is a function of the barrel more than the cartridge, with the same barrel specs the .243 would actually stabilize the longer projectile better via its higher velocity. CA Ridgeline FFT BBL Break In w/Issues?!? In simple terms, it's essentially a "6mm Grendel" with the "Creedmoor" treatment, alterations to the shoulder and casing for better feeding, more consistency, and ease of mass production. Copyright 2023 Big Game Hunting Adventures LLC | All Rights Reserved. So, if the Ballistic Tip ammo isnt really your cup of tea and you prefer controlled expansion and high weight retention, then this ammo, which is loaded with their 90gr AccuBond bullet, is perfect for you. Accuracy wise, Id say flip a coin. He eventually decided to use a 6.5 Creedmoor case necked down to shoot 6mm bullets in an attempt to build a new cartridge with even less recoil than the parent cartridge, but still capable of outstanding accuracy at 1,000 yards. With similar advantages for precision rifle competition shooting as the 6.5 Creedmoor, the 6mm Creedmoor is also a superb competition cartridge, especially for small caliber long range shooting and PRS competition shooting. 6mm ARC vs 6mm GT vs 6XC vs 6 Creedmoor Panther Hollow 2.85K subscribers Subscribe 213 Share 11K views 1 year ago PLEASE READ.. Hornady's new 108 ELD-Match needs a twist of 1:8. For instance, most .243 Winchester loads top out at 100 grains and few .243 rifles have a fast enough twist rate (1:9 and 1:10 are very common) to stabilize bullets heavier than that. Offset by a wide selection of available high end 6CM brass. The data used to compare the trajectory of the cartridges was obtained from Hornady (here, here, and here). Another factor to consider when choosing a caliber is recoil. The 6mm Creedmoorin the same fashion of its larger counterpartfits those bullets very well. Even so, the 6mm Creedmoor has received a lot of press because its undeniably well designed and offers definite advantages over similar cartridges. Specifically, those handloads use a 100gr InterLock with a .405 BCand the factory loads use a 90gr Hornady ELD-X (.409 BC) in .243 Winchester to a 103gr Hornady ELD-X (.512 BC) in 6mm Creedmoor, and a 143gr Hornady ELD-X (.625 BC) in 6.5 Creedmoor. It seems like more and more 6mm Creedmoor ammo options for hunting are hitting the market each year. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); To re-barrel or chamber a rifle to a difference caliber or cartridge, it is important to know if the bolt face will work with the new case head diameter. Id guess its tied to the myth that bigger cartridges need more barrel length. Many 6mm-caliber cartridges are used for various shooting purposes because they provide excellent accuracy and light recoil. With that said, lets take a closer look at the terminal ballistics of the two calibers in question. It can accomodate the newer, longer and heavier 6mm bullets that offer good ballistic coefficients, whilst still shooting them a fast muzzle velocities without too much recoil. Cal. This helps support the blog and allows me to continue to create free content thats useful to hunters like yourself. Like the .243 Winchester, the 6mm Creedmoor is also a really good varmint as well as big game hunting cartridge. The 6.5 Creedmoor commonly uses 120gr, 140gr, and 143gr bullets. Some of the greats are (from left) 6mm BR Norma, 24 Nosler, .243 Winchester, 6mm Remington, and .240 Weatherby Magnum. As with the the 6.5 PRC and the 300 PRC that are already out and have enjoyed large initial success and hype, the PRC in 7mm PRC stands for Precision Rifle Cartridge, and just like its siblings, it is a product of Hornadys cartridge design division. My personal 6 Creed is a Remington 700 Stainless Action from a rifle originally chambered in 308 Win, the action was then trued, fitted with a Lothar Walther .243 barrel in 1-7 twist on it with the chamber cut for a 6mm Creedmoor. No one shooter could tell me what rifle was chambered in what cartridge based on felt recoil. The 7mm obviously stands []. https://www.youtube.com/watch?v=1CrwuCyjGbE, HK MR762 Review: A Comprehensive Look at the Upgraded Rifle, Pelican Case Foam Cutting: How to Cut Perfectly Every Time, This div height required for enabling the sticky sidebar, 2022 Yestactical.com We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. The 6mm Advanced Rifle Cartridge (638mm), or 6mm ARC for short, is a 6 mm (.243) caliber intermediate rifle cartridge introduced by Hornady in 2020, as a low- recoil, high- accuracy long-range cartridge, designed for use in the AR-15 platform at request of a specialized group within the U.S. DoD for its multipurpose combat rifle program. It features reinforced construction and stronger materials throughout, which should help it withstand the rigors of tournament play. The 6mm Creedmoor is also often misspelled as 6mm Creedmoore or 6 Creedmore, it is also often called the 6-6.5 Creedmoor denoting the main 6.5 Creedmoor cartridge that it was developed from. Review: Hornady 6mm ARC. Definitely not worth arguing. The Eagle Eye 6.5 Creedmoor shoots a 130gr hybrid projectile with a .295 G7 at 2,960fps from an average 26" barrel. I am mainly talking to felt recoil. Well yes, about 7% less velocity means a little bit less recoil. Only time will tell for sure, but we think the new ARC has a good chance of becoming a mainstay in the world of competitive gaming. The much newer 6mm Creedmoor is by far the least common. fps Burn % Pressure max 6mm ARC - Alliant Reloder-17 *T 109.3 30.9 2621 98.4 62000psi 6mm Creedmoor - Alliant Reloder-26 *C 102.3 47.8 2837 99.4 62000psi So an 6mm ARC @58k psi might get there. Yeah the creed has the advantage, everything else being the same. The sixmm ARC has enough stopping power to take down small game, but it is not ideal for self-defense against larger animals or humans. Cal September 2, 2019 Ammo & Handloading, Brass, Bullets, Load Development, Powder, Primers, What The Pros Use 45. The table below compares compares the 3 cartridges using Hornady Precision Hunter ammo along with 2 max handloads for the 243 and 6mm Creedmoor using a 100gr InterLock taken from the Hornady reloading handbook. For the the heavier bullets like the 108gr ELD-Match, Hornady recommends 1-8 inch twist barrel, which is what I am also shooting them with in my PRS 6mm Creedmoor rifle and it suits those bullets perfectly. Hornady introduced 6mm Creedmoor factory ammo loaded with match and hunting bullets in early 2017. However, the superior ballistic coefficient of the ELD-X bullets used by the 6mm and 6.5mm Creedmoor helps give those cartridges a significant advantage over the .243 Winchester in terms of wind drift of around 4-4.7. However, if you are looking for a round that is specifically designed for self-defense, you may want to consider something else. The .243 Winchester only has a maximum SAAMI pressure of 60,000. Basically, hunters can take any game with the 6mm Creedmoor that they could with the .243 Winchester like deer, pronghorn, and even elk in some cases. In fact, while the selection of 6.5 Creedmoor rifles and ammo are also good, things are as good, and maybe even a little better with the 6mm Creedmoor with the ongoing ammo shortage. In a word, yes. A big fan of long-range shooting, Snow was particularly intrigued by the brand new 6.5mm Creedmoor cartridge that had just been released that year. Chuck Hawks(here,here, and here) provided the case capacity for each cartridge. As a result, the NRA is forced to restrict the sending of certain materials and information into California. In general, larger calibers are better at delivering more energy to the target and creating a bigger wound channel, while smaller calibers are lighter and easier to carry. This law also restricts communications that promote an organization such as ours. 6,685 Location Morrison, Colorado All I see on the shelves around Denver are 6cm, 25-06, and 300wsm. The new 6mm ARC from Hornady is currently gaining huge popularity as the newest 6mm on the block, and although it has its merits, ballistically it does not come close to the 6mm Creedmoor ballistics as it cannot hold nearly as much propellant. Thats understandable because, while the new cartridge has performed very well during practical shooting competitions since its introduction, the 6mm Creedmoor only started making the transition into the hunting community in the last couple of years. The chart below compares how much a 10 mile per hour crosswind impacts those same loads for each cartridge out to 500 yards. The 6mm Creedmoor and it's smaller siblings like the 6mm Dasher, BR, and BRX offer all kinds of options to shooters. The vast majority of shooters use their rifles for hunting, so we will focus on that application here. Once it reaches 500 yards, it has slowed but it's still maintaining . These factors make the 6mm Creedmoor very forgiving of range and wind estimation errors while at the same time helping to maximize the shooting abilities of the hunter to the greatest possible extent. Ill also provide some information on how it stacks up next to the .243 Winchester and 6.5 Creedmoor cartridges so you can decide if it fits your needs as a hunter. 25-06 vs 6.5 Creedmoor vs 270 Winchester: The Results Might Surprise You, 6.5 PRC: Ultimate Guide To What You Need To Know. Proprietary parts other than the float tube so you'll have to have one built if you go this route. So, what does this mean? As a follow-up exercise, I plan to use QuickDesign software to create a more accurate model for the 6mm . The 6mm ARC is basically the 6.5 Grendel necked down to hold a .243" bullet with the 30-degree shoulder pushed back a smidgen. The ARC is also an excellent choice for smaller game animals. For a better experience, please enable JavaScript in your browser before proceeding. However, if youre looking to compete at the highest levels, then youll want to choose the caliber that is best suited for your specific needs. In general, the bigger the bullet, the better it will perform on game animals. For the sake of discussion, why do you believe that the ARC will overtake the Grendel? If youre looking for a round that can do it all, then the ARC is the one you want. Comparing 6mm ARC to 6mm CR is is apples and oranges again. For that reason, Hornady offers the 6mm Creedmoor as part of their Varmint Express line of ammo. That is not cast in concrete however and many larger CXP3 animal have been taken with 6mm Creedmoors, but usually either at long range with high-shoulder shots, or close range with headshots, but this is not recommended. A 6.5 Creedmoor barrel typically lasts between 2,000 and 3,000 rounds, while the 6mm Creedmoor experiences serious velocity drops starting between 1,500 and 1,800 rounds. Take that for what you will, but no animal will be able to tell the difference between an additional 100-200 ft-lbs of energy with a well placed bullet though. I think on paper the 6cm factory loadings seem much better than 25-06 mainly because the cartridge is designed for long high BC bullets, and the 25-06 offerings seem to start fast and slow quick. Thank you for watching, I hope you guys have a blessed new year. The other big difference between these cartridges is that the 6mm and 6.5mm Creedmoor were both purpose built as competition shooting cartridges and were designed to use the longest and heaviest bullets available for their caliber without intruding into the powder column. The most critical difference is that in bolt-action rifles (from which the 6 mm PPC is typically fired) according to the "Western Powders Handloading Guide," the 6 mm PPC is loaded to pressures. I had a 6mm Norma BR built on a Remington 700 and I could not get it to feed from the magazine. These bullets arent quite as heavy and have a little bit lower BC than the Hornady ELD-X, but theyre still very aerodynamic and very accurate. For all the reasons mentioned is why I went with a 6x47 Lapua for a bolt gun. Even though it has the longest case of the bunch, the .243 Winchester has a 20 degree shoulder, which is not quite as sharp as the 30 degree shoulder shared by the 6mm and 6.5mm Creedmoor cartridges. Looking at the immense popularity of the 6mm Creedmoor in recent years, especially in the PRS racegun and other fieldshoot type competitions, the availability of factory ammo and factory chambered rifles in it, it would appear to be here to stay, with many claiming it displacing the legendary .243 Winchester. There are many large scale manufacturers making a 6mm Creedmoor Factory Rifle, including Ruger, Tikka and Howa to name just a few. As is the case with a handful of other newer cartridges, 6mm Creedmoor ammo has been much easier to find than 243 ammo throughout most of 2020 and 2021, even at the worst of the shortage. There is also talk on a post over on Accurate Shooter forum by a person calling himself gnoble, that he built this or a very similar cartridge back in 2001 already by shortening a 243 Mashburn (I think he meant a 244 Mashburn). 6ARC will be cool if Howa ever sells it as a barreled action on their mini action. (This post was last modified: 05-14-2022, 09:29 AM by, (This post was last modified: 05-14-2022, 09:54 PM by. BR GT Dasher all fine established cartridges but Brass and no factory rifle availability shows there limited appeal. However, the cartridge began turning heads in the hunting community. ?This told me that felt recoil is not as much about numbers as it is about the person pulling the trigger. Solutions . I know of several instances of people that Ive known who have bought new rifles in a particular cartridge specifically because they could get ammo for it. The ability to make rapid follow up shots and quickly correct for misses is also extremely important. JavaScript is disabled. Regardless of how well a given person handles recoil, all other things being equal, they will absolutely shoot better with a milder recoil. Do you have a rifle chambered in 6mm Creedmoor that you want to take on a hunt? If youre in the market for a new rifle, youve probably come across the 6mm ARC and 6.5 Creedmoor calibers and are wondering which one is better. Compared to the 6mm Creedmoor, the 6.5 Creedmoor shoots heavier, larger diameter, and more aerodynamic bullets at a slower velocity. The bullet diameter is .243, the same as any other .243 or 6mm centerfire cartridge like the 243 Win, 6mm Remington, 6XC, 6GT, 6mm BR and 6mm Dasher. This shows that HORI is confident in the longevity of the new ARC, and it should give players some peace of mind as well. My other favorite load is a Hornady 108gr ELDM at 2970 FPS. Read More . But what does that mean for terminal ballistics? Ultimately, it is the shooters that decide which new wildcats or cartridges become popular and are there to stay and which arent. This is one of those cases where I think doing that really makes sense in the short term. But when it comes to long range, and standard short actions, the 6mm Creedmoor beats the 6mm ARC quite far. With the numbers we use, it appears these cartridges each have their advantages. The Creedmoor in 6mm Creedmoor is named for the fact that it comes from a 6.5mm Creedmoor which has been necked down to accept a .243 bullet, the Creedmoor in 6.5mm Creedmoor originally comes from Creedmoor Sports, for whom the 6.5mm Creedmoor cartridge was developed by Hornady and Creedmoor Sports jointly. : 108gr/.559 Muzzle Velocity: 2900 MPBR: 326-y. The differences in trajectory are of course smaller at shorter ranges, but that 200fps advantage in muzzle velocity the 6mm Creedmoor has does result in a noticeable improvement in performance. These shooters we poled shot bench rest, PRS, F-Class and simi auto class. We talk to multi-discipline professional precision rifle shooter, Bryan Zolnikov about his rifle, reloading equipment and load development methods. That being said, if a guy wanted to push that type of speed and bullet weight, the 6mm Creedmoor is a better solution in my opinion. The .223 does have advantages, though. Deviating from Soviet design, the ARC takes on a 30-degree shoulder angle; this is common with . The average muzzle energy of the 6mm ARC is about 2300 ft-lbs, while the average muzzle energy of the 6.5 Creedmoor is around 2700 ft-lbs. The sixmm ARC has enough stopping power to take down small game, but it is not ideal for self-defense against larger animals or humans. It's not even worth a discussion, even in a 16in barrel the 6CM is hundreds of fps faster than the 6ARC. For this reason, the 6mm Creedmoor has less recoil and a generally flatter trajectory, but the heavier and larger diameter 6.5 Creedmoor bullets have more frontal surface area, more resistance to wind drift, and carry more energy down range. In short, the 6mm Creedmoor has the advantages of the .243 Winchester (flat trajectory and low recoil) and combines them with the best features of the 6.5mm Creedmoor (wind resistance and the ability to use long, low drag, high BC bullets). It delivers less drop, less wind deflection and the ability to shoot accurate groups at much greater distance (1000+ yds). Create and promote branded videos, host live events and webinars, and more. Even though the two InterLock loads use the exact same bullet, the 6mm Creedmoor does still have an advantage in wind drift over the 243 since it fires that bullet at a faster initial velocity. Having a chat with a buddy the other day who insisted that a 16" 6mm ARC would outperform a 16" 6mm Creedmoor using the same bullet (both in bolt guns). If you have any doubt how well Hornady does this look no further than the 6.5 Creedmoor. and 240 Wby. This is "6mm ARC vs the Creedmoors" by Hornady Manufacturing on Vimeo, the home for high quality videos and the people who love them. If youd rather listen than read, click the appropriate link below to listen to this episode on your preferred podcasting service. You can get a 6 to 6.5 pound rifle which can shoot high B.C. Among others, this list includes the 103 grain ELD-X from Hornady, the 95 grain Barnes LRX BT, the 87 grain Hornady V-Max, and the 100gr Sierra GameKing. Depending on how much shorter he actually made it, this could be the case as the rare wildcat 244 Mashburn cartridge also had the same rim, also very little tape in the case body, and also featured a 30 degree shoulder, but this again could not be verified other than that claim. In a bolt action The 6 Creedmoor rifle is easier to come by in good rifles. The only way that works is if his arc barrel is very fast and the creed is super slow and loaded light, similar pressures the creed will outperform the arc every time now the arc will be more efficient. The fact that the case length of the 6mm Creedmoor is shorter than that of the 243 Win, but that it can be loaded to a higher rated max pressure of 62 000 PSI compared to the 60 000 PSI of the 243 Win, means that the newer, more modern longer bullets with higher BCs can be loaded further out in the 6mm Creedmoor before reaching the magazine max overall length, compared to the 243 Winchester. My first concern about possibly switching is the 300ft/lbs lower energy of the 6mm ARC. Just a quick run through GRT shows the ARC topping out at ~2400 and 6CM around 2700. The 6mm ARC gives hunters the ability to successfully hunt varmints and deer. Unfortunately, were not living in normal times as I write this in September 2021. Photo by Michael Anschuetz. Second, I am fully set up with all components to shoot the 6.5 CM. Both cartridges have a much flatter trajectory than the 6.5mm Creedmoor. Demand for the new cartridge rapidly grew during the ensuing years. If youre just getting started in long-range shooting, then either of these calibers would be a great choice. ELD (l.) makes for an excellent long-range target round, while the 103-gr. 100-grain load exiting at 3,100 fps, and the .243 Win. Unlike its bigger brother the 6.5 Creedmoor, there arent many options for factory 6mm Creedmoor hunting ammo right now. The 6.5 Creedmoor commonly uses 120gr, 140gr, and 143gr bullets. You can boost the performance of the 6mm ARC in a bolt action quite easily. There are a lot of opinions out there on which rifle caliber is better, but it really depends on what youre looking for. We still have a long way to go and selection is still nowhere near where it was back in 2019, but things are a lot better now than they were even 6 months ago. All three cartridges have the same rim .473 diameter and they are all close enough in overall size that they are used in short-action rifles. This will give you a good, safe starting minimum load to work upwards from. The 6mm ARC delivers comparable performance from a wider assortment of bullets, making it a more versatile choice. Note: while the powder capacity figures listed below do give a good indication of the differences between the two cartridges, exact case capacities vary slightly according to the brand of brass used. All in all building a 6mm ARC would save me around 3 pounds (1 pound being on the very front end). With just a minuscule .8 separating them, the two Creedmoor cartridges have almost an identical amount of wind drift. To my way of thinking, we are splitting hairs ballistically, and as always the shooter will make all the difference. Thankfully though, there are many companies now including Hornady, Peterson, Starline and a few more, making 6mm Creedmoor brass cases. The Perfect 6.5 mm Cartridge The 6.5 mm Super LR is a 6.5 mm wildcat cartridge with a powder capacity of 55.5 gr of water weight (i.e. In addition to Hornady, Barnes, Federal, Nosler, and Remington all currently produce 6mm Creedmoor factory ammo. If you can not see the tyranny of having a gun ban enforced by men with guns Then you fail to understand why the second amendment was written in the first place. All things considered though, the three cartridges are very accurate, flat shooting, and hit hard enough for use on a wide variety of game at practical hunting ranges. So, the Creedmoor has about 17% more energy at the muzzle than the 6mm ARC. Which it does pretty well within those limitations. The 6mm Creedmoor was also intended for use from the start in semi-automatic rifles like the AR-10 as well as bolt action rifles. How does an "avid reloader" figure a cartridge is capable of outperforming another cartridge that has 50% more case capacity? The 6mm ARC uses less powder at lower pressure, so less recoil. The biggest advantage of the Creedmoor is its versatility. Scopes, guns, boots and other tactical stuff in-between. The 6mm Creedmoor 108-grain ELD Match is 2,960 fps. D DocT Joined The 6mm 109's offer several advantages," said Bryan Litz, Berger's Chief Ballistician. From the ballistic standpoint, the .244/6mm Rem. The 6mm Creedmoor or 6Creed as some call it, was a natural evolution as with almost any other 6.5mm Creedmoor that was eventually necked down to 6mm for faster muzzle velocities and lower recoil for PRS style racegun competitions. Case capacity of the 6mm ARC is 34 grains. But what does that mean for terminal ballistics? I love my Uintah rifle it shoots beyond my expectations for what it is. Right out of the muzzle, the 6mm ARC is traveling at 2,750 ft/s, or 170 ft/s faster than the 6.5 Grendel. The fact that this was said on such a knowledgeable forum, with no objection by anybody and the first person to mention that such a reamer has been made before by PT&G was in 2010 on that thread. Using the 6mm AR as the closest matching cartridge to the 6mm ARC (.441 base diameter, 30 grains H2O case capacity) in QuickLOAD, when limited to 52,000 PSI, the highest 108 grain ELD-M muzzle velocity from a 24" barrel is from 29.6 grains Hodgdon CFE223, yielding 2680 fps (it makes 2820 fps from 31.2 grains at 62,000 PSI). Like this unbelieveable 6mm Creedmoor of PRS Pro Shooter Jake Millard from Panhandle Precision who has recorded 2500 rounds through his 6mm Creedmoor and the rifle is still grouping well and shooting very low SD and ES as can be seen below: For safe reliable reloading data to start your load development journey with your 6mm Creedmoor, I would recommend working with the reloading data provided by either your powder manufacturer, like the Hodgdon reloading data portal, or the reloading data provided by your chosen bullet manufacturer. Nosler also offers their Trophy Grade hunting ammo in 6mm Creedmoor. All in all, this is outstanding 6mm Creedmoor ammo for hunting medium game like deer and pronghorn. Its accuracy and power make it more than capable of taking down even the most elusive prey. Another factor to consider is the current state of the competitive gaming scene. Here's some bolt gun load data. In a bolt action The 6 Creedmoor rifle is easier to come by in good rifles. This is especially trueif youre currently having a tough time finding ammo for other similar cartridges (like 243 Winchester). Since the two cartridges are virtual ballistic twins, theyre both suitable for hunting the same sort of game under the same conditions. In this article, Im going to discuss the pros and cons of the 6mm Creedmoor cartridge in detail. Click the link below if you just want to quickly check what ammo is in-stock and ready to ship so you can hit the range and get ready for hunting season. This was basically a 6 arc. So although John Snow from Outdoor Life magazine and website has claimed that it was his idea as early as 2007 but that they only made such a rifle later in 2009 for an article that appeared in the magazine in 2010 (earliest mention I can find of an Outdoor Life magazine that contains an article of a 6mm Creedmoor is of the Aug 2011 issue), that cannot be verified, so we will officially going with Mr Lee Gardner as the first documented person to think of the idea of the 6mm Creedmoor. Comparing 6mm ARC to 6mm CR is is apples and oranges again. It was identical to the .244 but had a different label. Velocity At short to medium distances, the 6mm ARC and the 6.5 Grendel are fairly evenly matched, with a slight advantage going to the 6mm ARC. Required fields are marked *. So, the Creedmoor has about 17% more energy at the muzzle than the 6mm ARC. The difference between the .243 Winchester and the 6mm Creedmoor can indeed make the difference in a tightly contested shooting match, but the gap between them is small enough that very few hunters will notice afield. The 6mm, refers to the bore diameter of the barrel, more specifically actually a .243 or 6mm bullet diameter. [], What is a 7mm PRC? However, just to give you an idea of the superiority of the 6mm Creedmoor over the .243 Winchester at long range, consider this: the .243 Winchester has over 30 more bullet drop than the 6mm Creedmoor at 1,000 yards when both cartridges have a 200 yard zero. The competition is timed, so first round hits are ideal, but theres more to these competitions than small shot groups.
