We have found some 6mm Creedmoor shooters pushing the bullet speeds in excess of 3000 fps to get around 2000 shots out of their barrels, and some have been able to extend that with proper barrel care life letting the 6mm Creedmoor barrel cool between firing strings, and hBN or other coatings on the bullets, or using the Tubb Throat Maintenance System bullets every few hundred shots. First off, the 6mm? 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. THANK YOU. Recoil vs cartridge study over the past year and findings. The 6mm Advanced Rifle Cartridge (ARC) is a new cartridge by Hornady in 2020. The larger the caliber, the more stopping power it will have. 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. 22-250 vs 223 vs 204 RUGER vs 220 SWIFT: CLASH OF THE SPEED DEMONS. at 2,960 fps. 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. But for some odd reason I would still like to build a 6 ARC from a rebarreled 6.5 gendel ruger american. It is also about the same size as a BB pellet. The 6mm ARC produces a larger splash signature that allows shooters to self-spot impacts and make rapid adjustments. From the ballistic standpoint, the .244/6mm Rem. The 6mm ARC uses less powder at lower pressure, so less recoil. You'll need a new barrel, bolt, and mags. This data is for Hornady handloads and HornadyPrecision Hunter factory ammo using a 200 yard zero and a 24 barrel. 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. Grade 2 ACL injury. D DocT Joined I waited to long to get the order in, but was trying to do my home work with it before ordering. 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. Copyright 2023 Big Game Hunting Adventures LLC | All Rights Reserved. As you can see, the .243 Winchester and 6mm Creedmoor have a very similar trajectory with less than a half inch of difference in their point of impact at 500 yards when using the ELD-X bullets. Its also offers match grade accuracy. Some of the greats are (from left) 6mm BR Norma, 24 Nosler, .243 Winchester, 6mm Remington, and .240 Weatherby Magnum. THANK YOU.. Recoil vs cartridge study over the. Unlike its bigger brother the 6.5 Creedmoor, there arent many options for factory 6mm Creedmoor hunting ammo right now. It also has a relatively low muzzle velocity, so it is not as effective at long range as some other calibers. 6.8 SPC The 6mm ARC has more match bullet options and is a better long-range performer. Also Available At: Brownells and Guns.com. which is also much easier to find than 6 ARC or grendel. The 6mm Remington was built with a new factory load of 100 grain and was said to have an exit velocity of 3,190 fps. Been doing a little more experimenting 6mm ARC Complete Upper 20" SS Barrel and 6mm Reloading EVERYTHING! However, thats during normal times and, as Im writing this in 2021, were not living in normal times. Many of these are match bullets like the Hornady ELD Match, the Berger VLD, or other boat tail hollow point (BTHP) and open tip match (OTM) bullets that arent ideal for big game hunters. You are using an out of date browser. Comparing 6mm ARC to 6mm CR is is apples and oranges again. 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. It also has a relatively low muzzle velocity, so it is not as effective at long range as some other calibers. [], What is a 7mm PRC? Hornady recommends 1:9 twist or faster for its 105-grain A-Max and BTHP Match. Like the Nosler Ballistic Tip ammo, their 6mm Creedmoor Trophy Grade ammo is also best suited for deer sized game. A mild recoil also facilitates with spotting misses and taking a rapid follow up shot both at the range and afield. 223/5.56. During PRS competitions, shooters must quickly engage targets at a variety of ranges all the way out past 1,000 yards. I am mainly talking to felt recoil. JavaScript is disabled. The case volume of the 6mm Creedmoor is on average 51.7gr H2O, with a case length of 48.77mm, and for the 243 Winchester of 53.6gr H2O with a case length of 51.94mm. This video or description may contain affiliate links. 18 Bartlein with a Manners CS2 stock. Top Precision Rifle Shooter Bryan Zolnikov Talks With LoadDevelopment.com. This means an average of 100 to 200 fps higher muzzle velocities from the better BC bullets out of the 6mm Creedmoor, so it beats the 243 Winchester in the energy, drop, windage and ballistics departments. Case capacity of the 6mm ARC is 34 grains. If you are looking for a versatile round that can be used for both target shooting and self-defense, the sixmm ARC is a good choice. 6.5 Grendel The 6mm ARC delivers comparable performance from a wider assortment of bullets, making it a more versatile choice. Review: Hornady 6mm ARC. Accuracy wise, Id say flip a coin. At this instant, I can find 3 different loads for it in-stock, which is more than I can say for the majority of other cartridges right now. The 6mm ARC came in second place with an effective distance of 550 yards. No one shooter could tell me what rifle was chambered in what cartridge based on felt recoil. Take a look at any good ballistics program Hornady and Federal both have an easy-to-use program on their websitesand you'll see the advantage of the better B.C. Video marketing. ELD-X . https://www.hornady.com/assets/site/hornady/files/load-data/6mm-ARC-gas-108-110gr-data.pdf, https://www.hornady.com/assets/site/hornady/files/load-data/6mm-arc-bolt.pdf, Peterson Brass Belted Mag Basic Unprimed Box of 50, .300 Weatherby Mag 170 G Hammer Custom Hollow Review help. This is the loaded equally with most efficient powder. Hey, Peter. If youd rather listen than read, click the appropriate link below to listen to this episode on your preferred podcasting service. We talk to multi-discipline professional precision rifle shooter, Bryan Zolnikov about his rifle, reloading equipment and load development methods. Feel free to reach out to us or read our affiliate disclosure and privacy policy. Both use the same 6mm/.243 diameter bullets, but the 6mm Creedmoor was specifically designed to use longer, heavier, and more aerodynamic projectiles. and 240 Wby. 6mmARC, 6mmGT, 6mmXC and the 6 creed. 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. 260 Remington vs 6.5 Creedmoor vs 6.555 Swede. The same goes for rifles. 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. Out of the same barrel length, 18 inches, the 6mm ARC is claimed to be capable of shooting a 108gr ELD Match bullet with a very slightly lower .270 G7 BC at a slightly faster 2630fps. 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. There are a few things that could potentially shorten its lifespan, but there are also many factors that suggest it will be around for a long time. The designers of the 6ARC wanted to create a round that would compete with the famous 223/5.56 in an AR platform, but it needed to shoot flatter at long-range. In this article, Im going to discuss the pros and cons of the 6mm Creedmoor cartridge in detail. I can't find the weight but I bet it's the one they mention that is only 4lbs 5oz. Shooters also cannot use bullets larger than .308 or with a velocity higher than 3,200 feet per second. 6.5 Grendel vs 6.5 Creedmoor: Which 6.5 Is Right For You? Our Sitemap. The bullet leaving the muzzle causes the felt recoil. Perhaps, someday. It seems like more and more 6mm Creedmoor ammo options for hunting are hitting the market each year. I shoot 105 Berger hybrids from mr 6br but dont hunt with it to know what damage they do. Mag. ?This told me that felt recoil is not as much about numbers as it is about the person pulling the trigger. I love my Uintah rifle it shoots beyond my expectations for what it is. That being said, remember that the 6mm Creedmoor only offers a small upgrade in performance over the other two cartridges. For a long time I have wondered about how barrel length affected velocity. Proprietary parts other than the float tube so you'll have to have one built if you go this route. 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. 6mm CM is over 200fps faster even pushing the ARC with a more compressed load. Cal September 2, 2019 Ammo & Handloading, Brass, Bullets, Load Development, Powder, Primers, What The Pros Use 45. You must log in or register to reply here. Loaded with an 87 grain V-Max bullet at 3,210 feet per second, this is a very accurate and extremely flat shooting varmint hunting load at all practical ranges. The .223 does have advantages, though. We poled 25 shooters at the range and had 4 rifles built the same. Unfortunately, thats not the case with the 243 Winchester. 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. 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. 6.5 Grendel vs 300 Blackout Review & Comparison, 11 Reasons The Leupold VX-6HD Is An Outstanding Hunting Scope, 450 Bushmaster vs 45-70 Review & Comparison, 28 Nosler vs 300 Win Mag Review & Comparison, Best 22 Hornet Ammo For Hunting Coyotes, Bobcats, & Other Varmints, 15 Best African Hunting Books For When Youre Dreaming Of Being On Safari[2023], Best 350 Legend Ammo For Hunting Deer, Hogs, Bear, & Other Game, Best 6.8 Western Rifles for Hunting Ultimate Guide [2023], Best 300 PRC Ammo For Hunting Elk, Deer, Bear, & Other Game, Best 6.5 PRC Ammo For Hunting Deer, Elk, Bear, & Other Game, Best 350 Legend Rifles for Hunting Ultimate Guide [2023], Best 6.8 Western Ammo For Hunting Elk, Deer, Bear, & Other Big Game, Ballistic Coefficient (BC): .512 (G1) .258 (G7), Muzzle Velocity: 3,050 feet per second (2,127 ft-lbs of muzzle energy), Muzzle Velocity: 3,100 feet per second (2,027 ft-lbs of muzzle energy), Muzzle Velocity: 3,200 feet per second (2,046 ft-lbs of muzzle energy), Ballistic Coefficient (BC): .436 (G1) .215 (G7), Muzzle Velocity: 3,150 feet per second (2,094 ft-lbs of muzzle energy), Muzzle Velocity: 3,210 feet per second (1,990 ft-lbs of muzzle energy). The 6mm Creed is anout .030 longer than the 6XC. Looks like your prayers have been answered. First you will see the video showing a guy that has hunted hundreds of those sized animals with his 6mm Creedmoor at long range and high shoulder shots. I shot a prs match with that setup back in September. However a 300WM will always beat a 308 given the same barrel length. It features reinforced construction and stronger materials throughout, which should help it withstand the rigors of tournament play. Create and promote branded videos, host live events and webinars, and more. 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. Im shooting 108eldm out of my 6mm creedmoor and really messing them up. 6mm GT vs 6mm Creedmoor The 6mm GT offer similar mag-fed reliability to the 6mm Creedmoor, with similar velocities, but with slightly less propellant, and is able to use the more forgiving propellants which make the 6mm GT slightly easier for load development with new barrels. The .243 Winchester only has a maximum SAAMI pressure of 60,000. 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 The biggest advantage of the Creedmoor is its versatility. In fact, I now only have RCBS dies for all of my calibers except the rare wildcat calibers that RCBS do not make dies for. This article contains the load data for the 6 Dasher based on a survey of over 100 of the top-ranked long range shooters in the country. TheHornady 10th Edition(p231-237 and p317-322) reloading manual was also used as a reference for the history of the cartridges and provided data to compare their size and recoil. I shot 87 vmax mostly at 2900 fps or so iirc with 8208. This means I will earn a small commission (at no extra cost to you) if you make a purchase. Both cartridges have a much flatter trajectory than the 6.5mm Creedmoor. case, being based on the .257 Roberts hull, has slightly more powder capacity than the .243 Win., and it's therefore capable of imparting a bit more velocity. 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. Once it reaches 500 yards, it has slowed but it's still maintaining . 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. It is more suited for the shorter action rifles like AR-15s and the Howa Mini Action rifles. The much newer 6mm Creedmoor is by far the least common. Most 243 Win. Posted: 3/17/2020 1:36:19 PM EST [#2] Quote History . 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 gunsmith would need a 6mm Creedmoor reamer to create a chamber in the barrel for it. 6mm Dasher Load Data - What The Pros Use. 6,685 Location Morrison, Colorado All I see on the shelves around Denver are 6cm, 25-06, and 300wsm. All in all, this is outstanding 6mm Creedmoor ammo for hunting medium game like deer and pronghorn. 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. September 26, 2019 at 5:48 pm. ELD (l.) makes for an excellent long-range target round, while the 103-gr. Using dramatically less powder, it is believed that the barrel on an 6mm ARC will far outlast a 6mm Creedmoor's. It kicks less and has very similar performance regarding wind drift, which after accuracy and consistency is the biggest issue for long-range shooting. That hornady chart looks to line up exactly where my numbers are. For these reasons, long, heavy for caliber bullets will fit in the magazine and chamber in 6mm and 6.5mm Creedmoor rifles. The 6.5 Creedmoor commonly uses 120gr, 140gr, and 143gr bullets. 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. It also has very little recoil, making it a great choice for shooters of all experience levels. In this blog post, we will discuss the differences between these two rifle calibers and help you decide which one is right for you! The question of whether or not the new ARC will last has been on everyones mind since it was first announced. The biggest advantage of the 6mm ARC is its extremely high ballistic coefficient (BC). Lastly, I am . He mentioned that he wants to invent a new cartridge by necking down a 6.5mm Creedmoor to a 6mm and that it would make a mean varmint cartridge. The 6mm Creedmoor being faster, less recoil and flatter shooting, the 6.5 Creedmoor having larger and better BC bullets, allowing the spotting of bullet trace, hits and misses better on target and doing better with the higher BC bullets out at extended distances, and greater availability of bullets and components. bullets. So, if you are looking for something to shoot at targets with, the sixmm ARC is a great choice. The Creedmoor will typically penetrate deeper and create a wider wound channel than the 9mm ARC, making it a better choice for hunting. 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. With almost 2 of separation at 500 yards, the gap between them is much smaller. 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). On the other hand, the .243 Winchester has a longer case length, but a shorter overall length than the other two cartridges. To my way of thinking, we are splitting hairs ballistically, and as always the shooter will make all the difference. Image shows 6.5 Grendel cartridge, parent case of the 6mm ARC. Apple|Google|iHeart|Spotify|Stitcher. I went with the 6 Creed for mine. Here's some bolt gun load data. Cartridge Specs: 6.5 Creedmoor Vs. 6mm Creedmoor Understanding a cartridge's capabilities always begins with basic knowledge of the physical properties of the cartridge. The 6mm Creedmoor has a trajectory thats virtually the same as the .243 Winchester and significantly flatter than the 6.5 Creedmoor inside of 500 yards. 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. Id guess its tied to the myth that bigger cartridges need more barrel length. And max velocity can be achieved with stick powders in CM. Both of these calibers have their pros and cons, but in the end, the 6.5 Creedmoor is a better choice for most shooters. This is reflected in the prices, availability, and variety of factory ammunition and hunting rifles currently in production for each cartridge. Additionally, I recorded an entire podcast episode on this exact subject. 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). The cartridge has a big advantage over the .243 Winchester in terms of wind resistance and is almost equal to the 6.5 Creedmoor in that regard. 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. (This post was last modified: 05-14-2022, 09:29 AM by, (This post was last modified: 05-14-2022, 09:54 PM by. Heres the numbers I was getting just for reference, A88157CD-5B7D-4FAD-BF99-FF399DDBF61C.jpeg. Available components is why the 6mm ARC makes sense, well that was the theory prior to Covid. 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. 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. Dont underestimate the impact that recoil has on the ability of a person to shoot accurately either. But when it comes to long range, and standard short actions, the 6mm Creedmoor beats the 6mm ARC quite far. 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. All of these cartridges have a very mild recoil that most shooters and hunters should be able to handle. Solutions . The vast majority of shooters use their rifles for hunting, so we will focus on that application here. Its large case capacity gave it a slight ballistic advantage . For that reason, Hornady offers the 6mm Creedmoor as part of their Varmint Express line of ammo. Ultimately, it is the shooters that decide which new wildcats or cartridges become popular and are there to stay and which arent. 6.5 Grendel. I only get 2680fps out of my 22" barrel. It was identical to the .244 but had a different label. For example,when fired from a Ruger American Predator rifle, a .243 Winchester load firing an 90gr Nosler partition has slightly less recoil than a 103gr Hornady ELD-X from a 6mm Creedmoor. 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. Makes for a crazy lightweight 6.5 grendel in their Howa carbon stalker. That's borne out by current factory ammo specs showing the 6mm Rem. Gardner realized that the 6mm Creedmoor fit the bill perfectly for PRS use, so he modified an AR-10 to use the new cartridge. It has served me well in both the NRL and PRS league, and I have taken more than 30 different animals with it successfully. The problem is that Hornady, which developed the 6 mm ARC, made a slight alteration to the case length so that it would be compatible with very long 6 mm bullets that have a high BC. It may not display this or other websites correctly. The 6.5mm Creedmoor isnt a heavy recoiling magnum by any stretch of the imagination, but the .243 Winchester and 6mm Creedmoor have the edge in this respect. I had always been told you need a certain length barrel for certain calibers. Scopes, guns, boots and other tactical stuff in-between. The powder capacity isn't even close. In a bolt action The 6 Creedmoor rifle is easier to come by in good rifles. There are a lot of opinions out there on which rifle caliber is better, but it really depends on what youre looking for. 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. Barrel life, according to most precision shooters is basically the number of rounds expected before the rifle shows inaccuracy of more than one MOA. The only place where it was always claimed that the .243 Winchester won the 6mm Creedmoor, was with ammo availability. 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. 6mm ARC Energy vs 6.5 Grendel Velocity makes a difference, but if you are concerned about how the bullet performs at the target; how well it can harvest game at certain distances, then energy is extremely important. Chuck Hawks(here,here, and here) provided the case capacity for each cartridge. 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. Also thanks to the 30 degree shoulder on the 6mm Creedmoor, compared to the 20 degree shoulder of the 243 Win, means that the brass does not expand and lengthen upon firing in the 6mm Creedmoor like on the 243 Winchester, so you have longer brass life before case head separation happens, and also the 6mm Creedmoor barrel is not burned out as fast as the steeped shoulder angle means the junction of the burn is further from the throat of the barrel chamber. Its bigger and more popular than ever before, with new tournaments and leagues popping up all the time. Cartridge - Powder Fill % Charge Vel. Peterson, Alpha, Lapua, etc. Unfortunately, were not living in normal times as I write this in September 2021. 6 ARC vs 6 CREEDMOOR | Ballistics Comparison The 6mm arc was developed by Hornady for use in an AR-15 but can be used for hunting or benchrest shooting mini action bolt rifle. 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. Compared to 5.56 NATO, the 6mm ARC offers substantially less drop and wind deflection and provides the ability to shoot much more accurately at longer distances. The recoil impulse of the 6.5mm Grendel is also significantly heavier than 5.56x45mm. In addition to Hornady, Barnes, Federal, Nosler, and Remington all currently produce 6mm Creedmoor factory ammo. The 6mm ARC's exterior ballistics are good, enough thanks to its use of high BC projectiles, to allow it to run with the .308 Winchester when shooting long. So an 6mm ARC @58k psi might get there. The 6mm Advanced Rifle Cartridge (6 ARC) by Hornady is a new cartridge that can fire a sleek 6mm (.243) caliber projectile around 2,700 fps with minimal recoil and the 6mm ARC is short enough to fit within the dimensions of a standard AR-15 magazine and it performs very well out of an AR-15 with an 18 inch barrel (what we tested). Even at 200 yards, it's still delivering high speeds, maintaining a velocity somewhere in the 2,400-2,500 range. Which it does pretty well within those limitations. I think the trick is not just looking at each of those things in isolation, but trying to strike the "right balance" between those competing . There are many large scale manufacturers making a 6mm Creedmoor Factory Rifle, including Ruger, Tikka and Howa to name just a few. In this video we compare the 6mm ARC to the 6mm Creedmoor using ELD-X ammunition. Because a real avid shooter loads his own ammo for various reasons. ADDED: 1-2-2021..Thank you, guys, for the comments. The 6mm ARC produces a larger splash signature that allows shooters to self-spot impacts and make rapid adjustments. Mossberg 500 vs 590: Which Shotgun Is Right for You? 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. 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. Currently 6mm ARC ammo is harder to come by than 6mm Creedmoor. The 6mm Creedmoor can use the same lighter weight bullets as the .243 Winchester and fire them a bit faster (around 200fps with typical factory loads). The 6mm Creedmoor and it's smaller siblings like the 6mm Dasher, BR, and BRX offer all kinds of options to shooters. The 109's are tailored to cartridges such as 6mm Creedmoor, 6mm BR, 6 Dasher, 6XC, 6BRX, and 647 among others. [5] Anyone used the Crossroad Archery Stabilizers? Theres no guarantee what the future may hold, but if I were in the market for a new hunting rifle and wanted something with great ballistics and minimal recoil thats great for deer that I could actually purchase a good rifle and ammo for right now, then Id be very seriously considering getting a rifle in 6mm Creedmoor. My buddy claims 2750 fps out of his 18" gas gun 108 ELDM. Re: 6XC vs. 6mm Creedmoor Both Copper Creek and McCort amunition have several loadings for the 6mm Creedmoor on properly headstamped brass. 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. A few years later, Gardner was brainstorming ideas on how to gain an advantage in the new Precision Rifle Series competition (PRS) that was rapidly growing in popularity and remembered the project hed worked on with Snow. This particular .243 Winchester load drops below the speed of sound around 1,150 yards, but the 6mm Creedmoor stays supersonic out until around 1,375 yards and the 6.5 Creedmoor doesnt cross the sound barrier until around 1,450 yards.