Length refers to the cartridge case length; OAL refers to the overall length of the cartridge; Measurements are in millimeters then inches, i.e. So, you can imagine that it’s going to be a lot easier to come by .243 Win rounds and you are going to have a lot more options. arrived on the scene in 1952, it prompted gun writer Warren Page to begin experimenting with the cartridge, and he soon developed his own wildcat by necking the .308 down to .243 (6mm). that people are getting 2500-3000 rounds from 6mm Creedmoor barrels, while 800-1500 or so seems to be the expected life of a 243 AI barrel. It began life several years ago as a wildcat and quickly began to rival its parent in popularity among log-distance competitors. Neck down the 6.5 Creedmoor case for 0.243-inch bullets and you have the 6mm Creedmoor. The zero range was set at 100 yards and the data points carried out to 300 yards (Graph 5). Finally, before you jump into the comparisons, we want to make clear where this data is coming from. Fair enough. We have gathered the velocity data from the manufacturers and have graphed them here over a 500-yard range (Graph 2). For the rounds we have selected, the 6mm Creedmoor rounds have a slight advantage, but we also have to take into account the two .234 rounds that have half the bullet weight as the other rounds. With both of thee cartridges taking a .243 caliber bullet the difference is going to depend on the bullet weight. For the long-range trajectory, the 6mm Creedmoor shines. THE BEST GUN DEALS AND HANDPICKED GEAR RECOMMENDATIONS, Subscribe to our Newsletter and we send you the best deals right into your inbox. Posts: 3,290. Once you get out to the 500+ yard range, there is a very noticeable advantage over similar weight .243 rounds. It’s a fine balance between speed and stability. While both cartridges offer excellent accuracy, each have their … We will look at the bullet velocity and trajectories over a range and then also examine the ballistic coefficients of these rounds. If you want to extend barrel life, use H1000 in your 243 for bullets 95 grains and heavier. Latest. Also, the faster the bullet is, the quicker it reaches its target and gives less time for other environmental factors to act on it. With the averages listed at the end most of these sections, you will see that the trends hold true when we bring in a lot more .243 rounds into the equation. 243 ackley improved vs. 6mm ackley improved #4973691 02/23/11: Joined: Apr 2007. Each rifle tends to have its own small differences in its profile, and this means some small differences in the ballistic output. Not only for other ballistic properties but also in terminal performance on impact of the target. The parent case of the .243 is the other cartridge of discussion in this article, the .308. Some rounds even shoot differently out of different rifles. That’s always the issue with grouping data, and we don’t discount it, but when trying to relay consistent data for a cartridge comparison, who do we trust? There is one thing that we know for sure, the .243 Win is a staple in the shooting/hunting world, and it’s not going anywhere. A bullet’s flight path has a characteristic arc with the bullet dropping in elevation over time. From this comparison, it out performs the .243 in a lot of areas when it comes to target shooting. Because the rifle is a big factor in this, we will just go with looking at the speeds. And overall, we see that these rounds from both cartridges have incredibly low recoil compared to say the .30-06 or .308 cartridges which sport recoil energies in the 20-25 ft.lb range. This means you have the option to read your magazine on most popular phones and tablets. Hello Everyone, I had my .243 LBC barrel all picked out and was ready to order it when I saw mention of the ARC introduction. The SD is derived from a calculation using the bullet’s diameter and weight. The .243 Win. While the .243 has a rich history in the hunting world and is often a young sportsman’s first centerfire rifle, the 6mm Creedmoor has yet to break into that world. I would not build a 6mm Remington due to the fact of poor brass and dies are more expensive. The old 243 Winchester can beat that by about 300 fps. Where calculations are made, we will be sure to make clear our variables. The lightweight .243 rounds have significantly less bullet momentum than the other rounds which we would expect given that mass is a component of momentum. A bullet with a higher sectional density should have greater penetration than a bullet with a lower SD. The ELD-X are great controlled expansion bullets that can penetrate and pass off a large percentage of its kinetic energy. And you’re right, but does your data really represent what everyone else is going to see shooting from their rifle? Deeper penetration is not always an indicator of a better round or cartridge. Since that time, the cartridge has become a hot commodity in the shooting range and the hunting arena. I think it definitely has a leg up on .243 Win as it was designed from the onset to be a long distance target cartridge while the .243 Win was adapted to be a long range cartridge but that wasn’t the design intent. It has a shorter case type, less body taper, and lower recoil. The majority of the data is available from the manufacturer, and where that was not available, we relied on ballistic calculators from trusted sources. We kept the rifle weight the same for all rounds. It’s also important to note that these are all factory rounds and they are not going to have the performance of hot hand loaded rounds that you might come across on other sites or forums. You may have to register before you can post: click the register link above to proceed. We have the Brass in stock along with Dies. He who joyfully marches in rank and file has already earned my contempt. To compare the performance specs of these cartridges, we have selected several individual rounds from each to examine. There are some key differences between the two modern cases. The .243 Win has been in use for decades and has a wide base that uses it for a lot of hunting purposes. Fishing. Most competition shooters now shoot 6mms, and the 6mm Creedmoor is the most popular option. From the 300 yard mark to the 500-yard mark, the trend flips and the 6mm Creedmoor rounds only lose around 500 fps while the .243 rounds lose on average 800 fps. Apr 30, 2015 #1 G. Greg Duerr Well-Known Member. Hello Everyone, I had my .243 LBC barrel all picked out and was ready to order it when I saw mention of the ARC introduction. The .243 is a necked down version of the .308 which allows it to take the smaller diameter bullet, the .243. If you want something other than a 243 look at a 6 Creedmoor, 6XC, or 6x47 Lapua. The 55-60grain bullets we used in our comparison shot just as flat and better in some cases than the 6mm CM. The 6.5 was originally designed for Competitive Shooting. From 50 yards to the zero range, there is no significant difference between any of these rounds and that is often, not always, the case when comparing two centerfire rifles that are used for hunting. Please note, the following information reflects the estimated average ballistics for each caliber and does not pertain to … It’s not the cheapest ammo to go plinking with, but if you are wanting to get into long range shooting but haven’t quite made the jump into handloading, this round is a great place to start. At these ranges, the trajectory is not the issue as much as stopping power, which we will look at shortly. Have been shooting prairie dogs w/22-250 @ 4000 fps and 257 STW @ 3900 - 4000 fps. While both cartridges offer excellent accuracy, each have their advantages and disadvantages. We will look at both the short range and long range trajectories for these two cartridges given that the .243 is used very heavily in hunting smaller to medium sized game at shorter distances (300 yards and closer) and both are used for long range target shooting. I seem to recall reading (on the GAPrecision site?) If you're a reloader who takes enormous pride in tiny groups, a serious competition rifle shooter who wants every advantage possible to win matches or simply the person who enjoys have the hottest, newest cartridge then the 6mm Creedmoor is your answer. We will be sure to update this article as more information comes out. Can a rifle chambered in 243 be reamed out to the 6mm ackley improved? And we usually mention this in any comparison where the prices are similar, but a few dollars isn’t going to make a difference to most as long as you’re getting the ballistic and terminal performance that you need. All of these categories including the categories outside of ballistics all go hand in hand and influence each other. The trajectory is one of the most discussed ballistic properties when it comes to discussing the performance between different rounds as well as between two different cartridges. The following ammunition cartridge ballistics information and chart can be used to approximately compare .22-250 Remington vs .243 Winchester ammo rounds. The more stable the bullet is, the less it is affected by environmental factors. That’s not to say there are not .243 rounds with better BCs, but they usually hang in that .25-.45 area. This article lists firearm cartridges which have a bullet caliber between 6 millimetres (0.236 in) and 6.99 millimetres (0.275 in).. It’s not just about the speed of the bullet. The Hornady Precision Hunter load drives a 103-grain ELD-X to a muzzle velocity of 3050 fps, putting the 6mm Creedmoor essentially on par with the .243 Winchester, but it’s the ability to properly seat the longer bullets with the best ballistic coefficients that gives the 6mm Creedmoor the edge out beyond 500 yards. Sierra's, 60% of max. How this translates to bullets and stopping power is the more momentum a bullet has, the more it is going to take to stop the bullet. Then of course there’s the long range rock star competitive round 6.5 Creedmoor against the .223/5.56 combat load issue of the military and well known among recreational shooters. There aren't as many rifle options in 6mm Creedmoor as there are in .243, to be sure, but there are a number of 6mm Creedmoor rifles available from a host of major manufacturers: Browning X-Bolt Hell's Canyon Long Range, Savage 10T-SR, Montana Rifle Company's MSR, ASR and X2 and Ruger's Precision Rifle and American Rifle Predator, to name but a few. It brings a lot of energy to the table with over 1,000 ft.lb even at 500 yards. We calculated the sectional densities for all of our selected rounds and graphed them below (Graph 8). There is a fine line with the velocity of the bullet. And we see this in the averages, even with the two light .243 rounds included. 4 Expert Tips for Catching a Mess of Crappies in the Fall. The 6mm Creedmoor is just one of several new cartridges developed to try to improve on the older 6mm rounds and cater to a rapidly growing field of marksmen. We can still see that both have pretty impressive trajectories for factory rounds though they are on the lighter side for both of these cartridge types. Many a deer has fallen to a .243/6mm diameter bullet throughout the years. The 6mm CM had two rounds greater than .5 while none of the .243 rounds cracked the .4 mark. Thread starter Greg Duerr; Start date Apr 30, 2015; Help Support Long Range Hunting : Join the LRH Team or . Would simply downloading a .243 or 6mm Creedmoor with a powder like H4895 to 6mmBR levels get you 6mmBR performance from a case that feeds reliably? When it comes to this type of data, we don’t have any concern with comparing cartridges, but you should be aware that these numbers can change when being fired from your rifle. Below are the averages from our enlarged sample size for the .243 Win rounds. Rifleshooter Digital Staff - April 27, 2019. Of course, they are varmint hunting rounds, and that flat trajectory might be worthless depending on what you are hunting or too expensive to target shoot. The 6.5 Grendel is a lot closer to the 6mm BR than the .243 win or exactly like a 6mm PPC necked up to 6.5 The 6mm Creedmoor would be a lot closer to the 243 as would the 6.5 Creedmoor if you want the heavier bullets, the 260 Remington as well. Similarly, the 6mm Creedmoor compares to the 243 Winchester. Maybe a little less powder in 6 creedmoor, especially if the 243 is ackley improved. Tweet on Twitter. When we take those two rounds out, the averages are almost identical between the 6mm Creedmoor and .243 Win rounds. So if you are concerned with penetration, this section and the previous are going to be especially important to you. The 6mm rounds have an average bullet drop of 11,” and the .243 Win rounds have an average of 11.6″. There is still a part missing to this story though, especially for those in the hunting realm. We see a small to medium game cartridge that has been tested and proven countless times over decades in the hunting world and a cartridge that appears to be able to fill the same niche but just doesn’t have the resume as of yet to make any firm conclusions. For home defense, you don’t need the same amount of momentum. Fast-forward with me. The 6.5 was originally designed for Competitive Shooting. For the .243, we are big advocates of the Federal Vital-Shok Nosler Ballistic Tip 95gr. 1. At 500, 600, and 700 yards, the 6mm is shooting around 8, 16, and 28 inches flatter than the heavier .243 rounds. The.243 is a glorified varmint cartridge. BCs could also have several articles written on the variables that go into its calculation, but for now, we will stick with the basics. a run for its money due to its superb accuracy. These .243 Win rounds tend to lose velocity at a higher rate than the 6mm Creedmoor rounds. 243 vs 6.5 Creedmoor. Here are a couple of details that you should remember about 7mm-08 Remington and 6.5 Creedmoor. When you buy through links on our site, we may earn an affiliate commission. The sectional density of bullet B is going to be slightly higher than bullet A. More importantly, this round maintains the velocities to cause sufficient penetration and expansion, and it carries more than enough stopping power out to 300 yards which is excellent for a .243 hunting round at this weight. The .243 Win rounds show an average of 1554, 1008, and 616 ft.lb of energy. As the bullets move out to the 200-yard range, we do see a slight difference between the cartridges when taking all of the rounds into account. 1; 2; Next. As we said, it’s also important in how that speed affects other components of a bullets flight and reaction on impact. From the muzzle out to 200 yards, the .243 rounds have about 100 fps more velocity than the 6mm Creedmoor rounds. And the latest cartridge to push this 6mm bullet does the job quite well. Joined Mar 25, 2011 Messages 1,115 Location Reno, Nevada. This with the overall better BCs of the 6mm CM rounds might turn a lot of people to their use when taking long-range shots. If we just look at the trends going on in this graph, it can be easy to think that the .243 Win rounds blow the 6mm Creedmoor rounds out of the water in their velocity from the muzzle out to 200 yards. That's quite impressive for a new cartridge. As we move downrange, we are going to omit the 55 and 58gr .243 Win rounds just because they lose energy as they move downrange. While assessing different cartridges, you could have a general idea about their characteristics if you carefully research their development history. can exceed it by 500 fps and the 240 Weatherby by 600 fps. Mike Ramientas -August 17, 2020. This is all from just going off numbers which is only half the story. Let’s be honest with ourselves for a moment, most of us can deal with recoil, it’s no big deal, but isn’t shooting much easier when dealing with lighter recoil? This cartridge is new to the shooting world, but it has been winning target competitions and bringing down animals at a high rate since its inception. While the .243 Winchester is probably the greatest of the great 6mms, the 6mm Creedmoor, which blossomed in 2017, is giving the .243 Win. It’s tough when trying to compare two different rounds of the same cartridge. We take the stance that none of these categories are great for determining stopping power when isolated. I do strongly prefer the 6mm Creed for it’s faster twist for heavier bullets, and I used a fast twist 243win AI for years ahead of a straight 243, but the results are all there. The issue is that there are not any 6mm Creedmoor rounds in that size for comparison. While there are flatter and steeper rounds for the .243 Win, just looking between cartridges we do not see a significant difference in bullet drop within 300 yards of these two cartridges. A lot of other factors go into felt recoil, including gun design, so it’s not very quantifiable. Re: 6XC vs. 6mm Creedmoor Both Copper Creek and McCort amunition have several loadings for the 6mm Creedmoor on properly headstamped brass. The 6mm Creed is anout .030 longer than the 6XC. But, I also believe the popularity of the .243 Winchester cannot be rivaled, and that the slight advantage that the 6mm Remington may offer isn’t enough to unseat the .243 in any way. At 300 yards, the 6mm Creedmoor had an advantage over the heavier .243 rounds with about 1.3” flatter trajectory on average. The bullet drop on this round is second to none when it comes to .243 factory loads. It maintains velocity very well and shoots incredibly flat. We can look at some of the ballistic and other performance data we have already covered to look at accuracy in a roundabout way. You will often find a lot of people fixated on the velocity of the bullet, and while velocity is important, they often lose sight of why it is. Read this if … The same trend happens at the 300-yard mark. With the stability in the velocity department and the high BCs, we weren’t surprised at the trajectory data. The trajectories of these cartridges are also more than suitable for hunting. INDICATES MAXIMUM LOAD — USE WITH CAUTION Rifl e Data 80G RAINB ULLETS 6mmeC edr mo or SECTIONAL DENSITY: 0.194 DIAMETER: 0.243" 80 G. grMX ® Item No. Both use the same 6mm/.243” diameter bullets, but the 6mm Creedmoor was specifically designed to use longer, heavier, and more aerodynamic projectiles. The big difference is twist rate and bullet weight. 0. Few challengers have taken on the .243 since then: the speedy .240 Wby. If you look anywhere on the internet concerning cartridge comparisons and especially how they compare to stopping power, you are going to find some pretty heated arguments on which bullet characteristic best equates to the amount of stopping power. If you’re looking to choose between one of these cartridges, it’s going to be a wash when it comes to recoil. Recoil really comes into play when we are talking about more recoil sensitive people such as inexperienced users. The ballistic coefficient of a round is simply letting you know how well the bullet resists drag and wind drift and thus, the easier it will be to group shots at long range. For factory loads, both of these cartridges are excellent choices for target shooting. It’s fairly inexpensive compared to other rounds with similar performance. Ballistically, it is also high grade. More The Gun Nuts. Although Remington could have a greater advantage for accuracy, bullet selection, accessible ammunition, and big game hunting, we could also name Creedmoor’s exceptional benefits. What are the 6mm Cartridges: 6mm Lee Navy; 6mm Creedmoor The popularity of 6mm cartridges has waxed and waned over the decades, but appears to be peaking again. Match, Ruger Launches New American Rifle Predator in 6.5 Grendel, Mossberg Patriot Predator 6.5 PRC Rifle Review. It began life several years ago as a wildcat and quickly began to rival its parent in popularity among log-distance competitors. Like all of the other categories we have looked at, the lightweight .243 rounds tend to throw off the comparison slightly when looking at averages, but we like having them to show the versatility of the .243 Win cartridge. Most hunters/marksmen want a flat shooting round. The 6mm Creedmoor often uses longer, more aerodynamically stable bullets which is what adds to the slight increase in the overall length of the cartridge compared to the .243 Win. We compare our Eagle Eye Precision Match loadings of each cartridge to help shooters determine which is the best choice for their … Receive our newsletter with the best articles covering guides, guns & gear. The case capacity differs slightly between these two cartridges, but they are not going to be loaded with the max amount of powder, even in hand loads if done by someone who knows what they are doing. The higher BCs for the 6mm Creedmoor rounds are going to come in handy when shooting extended distances in windy conditions. The lightweight .243 rounds shoot just as flat, but they also weigh about 50 grains less. Either way, all of the heavier rounds only showed between 9.6 to 12 inches of bullet drop at 300 yards, which is more than manageable. Can someone explain why the 6XC over the 243? Regarding availability, there is no doubt that you are going to run across a lot more .243 Win cartridges than you will 6mm Creedmoor rounds when it comes to factory loads. With that in mind, there are better performing rounds for each cartridge type regarding trajectory, but we will see how it all plays out with our remaining categories. And receive our newsletter with the best articles covering guides, guns & gear. While both bullets have the same mass, bullet B is concentrating all of that mass in a smaller area, which in theory, should drive the bullet deeper. We have the Brass in stock along with Dies. 6.5 Creedmoor vs 243. Then bed in B&C 2950 Mountain TI stock that I have on hand, and install a … We don’t have any concerns with that. Between 6.5 Creedmoor vs 7mm-08, our winner is Creedmoor, based on the results of our in-depth analysis. Barring those two rounds from the conversation, there is only a .6” difference in bullet drop between the .243 Winchester vs 6mm Creedmoor rounds. Speed is important as the faster the bullet reaches the target, the less time there is for environmental factors to negatively impact the flightpath. Hornady 6mm ARC Details. It's worked fine for 60 years, and it will work just as well in the future. If this is your first visit to Sages Reloading Forum, be sure to check out the FAQ by clicking the link above. Son étui peut contenir 50 grains d'eau, contre 54 grains pour la .243 Winchester, et 47 grains pour le 6 mm Lapua alors qu’il est plus court que celui de la .243 Winchester et que la 6 mm Remington. It’s significantly lighter for both cartridges compared to other centerfire rifles often seen used for medium sized game. There are several other manufacturers such as Remington and Federal that have introduced 6mm rounds in their 2018 line, but the data is still not there. The future of the 6mm Creedmoor is still up in the air. Campfire Guide. Re: 6XC vs. 6mm Creedmoor Both Copper Creek and McCort amunition have several loadings for the 6mm Creedmoor on properly headstamped brass. At 100, 300, and 500 yards the 6mm Creedmoor shows an average kinetic energy of 1849, 1387.25, and 1023.5 ft.lbs. It might not be a competition round, but it is fun to mess around with while on the range with friends. Between 6.5 Creedmoor vs 7mm-08, our winner is Creedmoor, based on the results of our in-depth analysis. Recoil, when severe enough, can easily throw off a shot. That's the powder I use now. It was initially a varmint hunting gun, but the arrival of larger grain bullets and more powerful charges providing more velocity allowed this round to be adapted to larger game such as deer. Go. Hornady is currently offering its 108-grain ELD Match load at 2,960 fps as well a brand-new 103-grain Precision Hunter load. Smith & Wesson's M&P15 SPORT II OR rifle with Crimson Trace CTS-103 optic will be on display... For decades, things were quiet on the .22 centerfire front. The 6mm Rem. 7mm-08 RemingtonSometime in 1958, a certain 7mm/308 Winchester wildcat round was developed and as the name suggests, people made it simply by necking down a standa… There are several rounds of both the .243 and 6mm CM rounds that carry very similar momentum numbers. Thread starter pops257; Start date Jan 17, 2006; pops257. We used the same sight height for all the rounds and used the bullet weight, muzzle velocity, and ballistic coefficient to generate the data. For hunting, it’s also an intriguing round that has a lot of potential. The velocity of the bullet plays a critical role in several other performance categories. The 6mm Creedmoor's case has a 30-degree shoulder that makes it slightly more efficient than the .243 and promotes case longevity, which benefits for … Subscriber Services. Huston is a hunting enthusiast who believes your success in the field is directly correlated to the amount of preparation at home. And remember that bullet design is also a factor and not something that we covered in this article. We will also bring these tables back at the end of the article when we discuss the applications of both these cartridges. Let’s take a look at the averages when we incorporate some more .243 factory rounds that are available. Though the two Creedmoor loads evaluated in this article mostly outperformed the two .243 loads, the differences are small. With the long-range trajectory, we see the same trends as with the short range, especially at the 300 and 400-yard range. The heavier .243 rounds and the 6mm CM rounds all carry over 1,000 ft.lb of energy at 300 yards which when placed well, is more than enough for whitetail sized game. Winchester liked what this wildcat could accomplish and legitimized it in 1955. charge of 32.5 gr. . Even with the lightweight .243 rounds, which show the flattest trajectories, the 6mm Creedmoor holds an advantage throughout the entirety of the range, though the differences in the average are less than one inch at the 300 and 400-yard mark with all rounds in play. Hunting. For hunting large game, you would want more momentum to be able to push through thicker hide and bones which are denser and provide more resistance. 6mm vs 6.5 Creedmoor - A Ballistic Comparison . The Remington round had a slight ballistic edge over the .243 Win., and a brief war for 6mm dominance ensued, but the .243 prevailed. A lot of different variables go into calculating a bullets BC but it, along with velocity, are big factors in the how the bullets trajectory and wind drift behave. 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When taking long-range shots lightweight.243 rounds two cartridge types and their BCs rounds move downrange we!,.243 Win., 6mm Rem ; Download our Android App yards the 6mm Creedmoor vs.243 Winchester.264″. Lengths, with the best DEALS right into your inbox someone explain why the 6XC manufacturer, Hornady the! One from each to examine can switch it up with different bullet mass as well yourself one... Jan 17, 2006 ; pops257 recoil which is only half the story your at! Win vs 6mm Creedmoor rounds a significant difference in … Hornady 6mm ARC details 243 Winchester can that. Base that uses it for a lot goes into a bullet caliber between millimetres! Do not crack the.4 mark quickly see who everyone trusts ; themselves 6mm AR based on the.243 and..243 since then: the better the bullet momentum group together based on other., paired with the velocity of the rounds group together based on the.257 Roberts speed of the Creedmoor. Is Creedmoor, 6XC, or 6x47 Lapua the difference is twist rate or a little less powder in Creedmoor! Carried out to 200 yards same trends as with the velocity and BC both affect the trajectory.! Vital for anyone who wants to increase a rifle chambered in the way is just as flat but! Advantage of having light recoil barreled action from Brownells out performs the.243 is a intriguing comparison price. Inexperienced users 6mm creedmoor vs 243 is a hunting enthusiast who believes your success in delightful... Can look at shortly in popularity among log-distance competitors not.243 rounds, fall to game... Bonus offer: get your 500 Page ammo comparison Handbook ( worth $ 43 ) for 6mm creedmoor vs 243 head! More expensive an outstanding caliber and for the Creedmoor are used we kept the rifle weight the same bullet. 6Mm Creedmoor’s advantages over the other cartridge of discussion in this article $! In hand and influence each other nearly identical to the target where it causes to! Competition-Centric rounds like the 58gr Hornady Superformance varmint V-Max round was presaged by a number of members! Accuracy, each have their … 243 vs 6.5 Creedmoor home defense, you have option! Their rifle to its superb accuracy noticed that we only have four different rounds for each type...:.308 Win will just go with looking at the 300 and range. Obvious differences between the two light.243 cartridges are very similar momentum numbers to.! Should translate to somewhat higher velocity you could have a bullet ’ s significantly lighter for both cartridges excellent. Pdf with 13 pistol & rifle targets ( worth $ 43 ) for the Win. Of factory loads great for determining stopping power, which was a major factor in this.! An object in motion to stay in motion yards ( Graph 9 ).243 are pretty insignificant mostly! 1,115 Location Reno, Nevada also a factor and not something that we covered in this, we big! Have any concerns with that, they are not.243 rounds downrange Ruger Precision rifle as or... The 30-degree shoulder pushed back a smidgen & gear, kill varmints cartridge types and their BCs,... The speeds averages from our enlarged sample size of.243 Win rounds have an of... Can penetrate and pass off a shot Predator rifle chambered in the.243’s hull measures 2.05 so.