With a degree in Microbiology and several years of doctoral work manipulating bacterial genes, he attempts to merge the rational and unbiased thinking of scientific research with the passions of hunting and fishing. We have bullet A at 100gr and a .300 bullet diameter. especially the very light varmint rounds which bring down the .243 Win BC average slightly. Both the .243 and the .308 are tremendous cartridges that are widely abundant to come by and are pretty versatile when it comes to different shooting scenarios. For a cartridge comparison such as the .243 vs .308, potential users want to see which has a flatter trajectory, meaning it shows less bullet drop. Both of these cartridges are fairly prevalent on the market. The .308 is a larger and heavier round than the .243 2. Page 1 of 2 1 2 Next > Nov 24, 2006 #1 . And while there are also several .243 rounds that have a sectional density closer to the .308 average and there are a couple .308 rounds that do not have as high a sectional density as some .243 Win rounds, you are generally going to have more options for high sectional densities with the .308 Win. And receive our newsletter with the best articles covering guides, guns & gear. Huston is a hunting enthusiast who believes your success in the field is directly correlated to the amount of preparation at home. Meanwhile the poor little 243 Winchester, which is the 308 Winchester case necked down to accept 243-caliber bullets, is suspect. There is not a huge difference between the two at the 200 and 300 yard mark, and we are still only looking at about 8 inches of difference between the two when we go out further at 400 yards, which is pretty impressive given the much heavier bullet weights of the .308 Win rounds. There is still a large difference though and it is substantial enough to take note of and take into account when thinking about which applications these cartridges would be better suited for. We are looking at the velocity (ft.sec) from the muzzle out to 500 yards in 100-yard increments. Let’s take a look at the long range averages for these two cartridges and see if the trend holds up with more rounds thrown into the mix. Please note, the following information reflects the estimated average ballistics for each caliber and does not pertain to … We do see that the .308 Win rounds still carry over 1,000ft.lbs through the 500 yard mark while the .243 Win rounds begin falling below this threshold at the 300 yard mark. Anything within that yard mark is no issue. Let’s compare these two rounds in greater detail: Join 70,000 Readers For Our Weekly Discounts. Bullet diameter: .243 in (6.2 mm) Case length: 2.045 in (51.9 mm) Twist: 1-10, 1-8 Availability: Great And if you are thinking that extra light .243 rounds (under 60gr) are skewing the data, the average muzzle velocity with those two rounds removed is 3140fps and the 500 yard average is 1900fps. The first is that the .243 seems to have higher velocities from the muzzle out to the 500-yard mark. When I first started hunting over 20 years ago, a friend loaned me several calibers of rifles (.30-06, .243, .270, and .264 mag) to try out & after shooting all of them several times, I was most comfortable with the .30-06 and decided that was what I was going to use. This is not something we discussed in the article, but it is something to keep in mind. SD along with velocity and bullet type all factor into penetration, and we will discuss how it all ties together in the application section. There is some overlap in velocities between the two cartridges as they reach the 200-yard mark and beyond as it appears that the .243 rounds bleed of velocity at a higher rate than the .308 rounds. BONUS OFFER: Get your 500 Page Ammo Comparison Handbook (worth $43) for FREE right into your inbox. I've been saving up for a .260 CTR, but I'm thinking that at this price ($460) I should jump on a … If we look at the heavier .243 rounds, there is not a whole lot of difference between the .308 rounds. The 243 is a distant third, especially given the 300 yard requirement. Like the .308, a box of .243 cartridges can vary from $20 to $50 bucks. It’s not as simple as using higher burning powders as these cartridges can only hold so much and take so much pressure, and there is a fine line you walk with a hot round. We are going to make a lot of comparisons on these two cartridges. For the .243, you’re looking more at an average price of $30 for a box of 20 rounds. Brass is cheaper for 308 . both are able to shoot 1000 yds, but which one is the better caliber and why? This difference between the cartridges remains the same as the rounds move downrange though the amount of difference between the two cartridges does drop to only 17lbs/ft.s when we don’t include the 55 and 58gr rounds. Have a look at .308 Win vs 30-06 Springfield and points out the differences between the two. While hunting, being able to have confidence that your bullet will reach the target and still have enough force to make a clean and quick harvest does a lot for confidence. All cartridges are going to have a specific niche in the shooting world where they excel compared to others, but it’s always a fun and informative exercise to put two cartridges up against one another. I chose a.243 over a.308 because I could shoot higher BC bullets, faster, with the same amount of powder and the same length barrel. Overall, we see a similar trend as we did with the short range trajectory. My opinion, .308. The parent case of the .243 is the other cartridge of discussion in this article, the .308. The averages all support this though the .308 closes the difference as the rounds move downrange. Instead, we are going to look at the actual energy(ft.lbs) that is created when the power is ignited. My entire family swore off the .243, going to 7-08 and .308, and have not lost a single deer since in the last 25 years. 90-100 grain bullets. I am planning on building the wife her own deer rifle using a mauser action rebarreld to 243 or 308. First, there are some distinct differences just between the .243 rounds. And that seems to be a trend between these two cartridges when looking at how they compare in the components of stopping power. 243: 6.8mm Rem. The reason is that both have the same mass, and we are assuming similar velocities, but the force that is generated behind bullet B is localized to a smaller surface area than bullet A. The.243 Winchester is simply the.308 Winchester necked down to hold.243″ diameter bullets. While the .308 is using much heavier bullets than the .243, they are also using more powder to propel them downrange. Receive our newsletter with the best articles covering guides, guns & gear. So for momentum, the higher the number, the more resistance the bullet can encounter while still moving forward. And we would expect this trend given the similarities in velocity between the rounds, barring the two lightweight .243 rounds, and the increased bullet weights of the .308 rounds. Please note, the following information reflects the estimated average ballistics for each caliber and does not pertain to a particular manufacturer, bullet weight, Basically, the .308 Winchester round is simply a civilian version of the 7.62x51mm NATO round, which was originally developed for the M14 rifle. Just as there is a noticeable difference between the recoil of the two calibers, there is also a significant difference when it comes to the energy that they produce. We’ll get into some other important performance factors for hunting shortly. These are not the sole factors involved in stopping power. This round has high velocities, but it does bleed off speed at a high rate, and by the time you get out to 500 yards and beyond, it doesn’t perform any better than other rounds regarding velocity. This means that the momentum of a rifle's reaction will exactly equal the momentum of the bullet and powder gasses ejected from the barrel. All of the .308 rounds still have higher SDs, but their sectional densities are only around 1-3 hundredths more. 308 will have MUCH longer barrel life, more recoil, more downrange energy in you are a hunter. The .243 is a necked down version of the .308 which allows it to take the smaller diameter bullet, the .243. This also means that .308 is the far superior option for bringing down large gam as well as for long distance shooting.eval(ez_write_tag([[300,600],'gunnewsdaily_com-medrectangle-4','ezslot_3',130,'0','0'])); But it also means that the .308 is not the best choice for recoil sensitive shooters, and furthermore, it may be considered ‘overkill’ on game that is smaller than a deer. 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. When you buy through links on our site, we may earn an affiliate commission. So while the numbers we present might fluctuate depending on the actual powder charge used by the manufacturer (not provided) or what your rifle weighs, the general trends are safe to draw conclusions from. This is imperative for hunting, where you want your bullet to penetrate sufficiently in order to cause maximum damage to the game animal and bring it down ethically with a single shot. gunsmoke71 New Member. Originally posted by Osagehunter To generate data from a ballistic calculator we used the rounds BC, muzzle velocity, and bullet weight (Graph 6). We still include them because this is a comparison of two cartridges and not of just individual rounds. Now let’s dive into talking about the nitty gritty details of these two rounds. No magic bullet there (pun intended) Case life on the Swede is phenomenal with the old low pressure loads. In 1952, Winchester commercially released the .308 round along with chambering its Model 70 and Model 88 rifles for the cartridge. Erfahrungen mit 243 vs 308 Es ist überaus ratsam herauszufinden, wie glücklich andere Männer damit sind. SPC (115 Sp at 2800).325 +2.6" +1.3" 3"@130: 267.270 Win. Whitetail Deer Cartridge Shoot-Out: .30-30 Win. While the .308 Win produces more recoil, it’s a good indicator that there are going to be other differences between these two cartridges and more recoil might just be something you have to deal with if you want the other performance specs of the .308. We look and compare each individually for the sake of simplicity, but all factor into the performance of the bullet and the cartridge as a whole. While we think it has a large role in making difficult shots easier, don’t make the error of thinking that if a bullet has a high BC, it is going to do all the work for you or replace experience and skill. And while newer and flashier rounds have come onto the scene, some of the top shooters in the world still load a .243 and they win with that cartridge consistently. Not to discount the .243 as does carry adequate energy … We compiled the velocities of the ten rounds from the manufacture and have graphed them here (Graph 3). What this cartridge offered was a long range hunting round that was able to take lighter bullets that were more suitable for target shooting and varmint hunting. You should not expect to much at … Within 200 yards, both of these cartridges can be nail drivers given their trajectory at these ranges. It’s a great medium to large game rifle and can be used for just about any large game animal in the world, barring a few. Though, the ballistics can make a difference when the two cartridges are being shot by someone who knows what they are doing. At this point, there is less than two inches difference between the averages of the two cartridges, and if we omitted the two light .243 rounds, there is less than one inch. Sectional density is derived from SD along with velocity and bullet type all factor into penetration, and we will discuss how it all ties together in the application section. Where calculations are made, we will be sure to make clear our variables. In the end, we are not going to try to make a claim for which is the best. When we look at the BCs of these two rounds we see that the .308 round, at least from this selection of rounds, has higher ballistic coefficients. So one thing that could improve would be to make the eye relief a little more generous for users. The shell casing was designed to ease case extraction and cartridge feeding in bolt action rifles as well as machine guns. Especially if it is hunting, where stopping power is as critical and is the subject of our next section. (150 Sp at 2900).481 +2.6" +2.0" 3"@138: 287.270 WSM (130 Sp at 3206).416 +2.4" +2.4" 3"@150: 311.270 WSM (150 Sp at 3150).481 +2.5" +2.4" 3"@150: 311.270 Wby. From there, we can discuss the applications for each cartridge and under which situations they will be better suited. It’s not that one is better than the other, it’s that one is better than the other depending on the scenario. 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