So a .300 Weatherby Magnum round exits the barrel with kinetic energy equal to the energy required for linear vertical displacement of 4070 pounds through a one foot distance, while a .300 WSM Winchester Short Magnum round exiting the barrel has energy equal to the amount required to displace 3580 pounds over the same one foot distance. And as we mentioned before, there are .300 WSM rounds that use the 200-grain bullets, but we have come across a lot of problems that people have when feeding these large bullets through short action rifles. Just looking at the muzzle velocities, we see three rounds that outperform the others with two of them being .300 WSM rounds and one .300 Win Mag round. If there is no issue with the rifle, there are several 190+ grain weight WSM cartridges out there that give higher BC’s than the 185grain and lighter rounds. In reality, most rifles chambered for the .300 WSM are often a little lighter with them having a short action. We offer a 100% Authenticity Guarantee on all products sold on our website. It is an older round with a much larger following then the WSM and the manufacturers know this. Our website lists special deals on 9mm Ammo, 10mm Ammo, 45-70 Ammo, 6.5 Creedmoor ammo, 300 Blackout Ammo, 10mm Ammo, 5.56 Ammo, Underwood Ammo, Buffalo Bore Ammo and more special deals on bulk ammo. Get our PDF with 13 pistol & rifle targets (worth $48) including expert instructions for FREE! So with that, let’s take a look at the stopping power of these cartridges. In the table below, you will find the sectional density data from the larger data set. The .300 Win Mag rounds have an average of 80.0lb/f.s while the .300 Win Mag has an average of 77.12lb/f.s. It’s not that you can’t get what you want of the .300 WSM, but you might have to shop around more for it. If you were to take the price of every round for each cartridge and average it, the .300 Win Mag might be a couple dollars more expensive, but most people are going to be more concerned with the performance of the round. The short magnums, such as the .300 Winchester Short Magnum, were excluded from this test since they just duplicate their larger cased cousins’ performance but in short-action rifles. For hunting purposes, which both of these cartridges are used for, all the ballistic data is important, but if they can’t bring down big and thick hided game, it isn’t going to matter if the bullet gets there. The increase in length of the .300 WM over the .300 WSM is greater than the increased wideness of the case of the .300 WSM. Like any hunting cartridge, it’s all about matching the style of ammo with the hunting situation when thinking about its effectiveness. Both of these cartridges can be hand loaded to give better performance specs. For the sake of clarity and simplification, we will discuss it in terms that the firearm manufacturers use to describe their ammo’s flight characteristics. If recoil and price don’t bother you much, getting the 300 RUM ammo is still a great choice. As a rule of thumb, when it comes to hunting, muzzle energy is what many hunters look at when deciding on what caliber of firearm / ammunition to select. 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. With that, there were several .300 WSM rounds with BCs from .5 to over .6. You get changes in performance from the individual rounds, but it’s tough for us to say which cartridge gives you more of a certain ballistic or other performance component. We offer cheap ammo and bulk ammo deals on the most popular ammo calibers. Some people like a little extra velocity out of the muzzle, especially long-range shooters, and there are .300 WM and .300 WSM rounds that give you that. Because propellant loads used by the manufacturer are not available, we went conservative with the loads using Nosler load data and kept the charge the same for each round within a cartridge. Is this difference significant in the relation of cartridge to cartridge comparison? If we look at the averages, the .300 Win Mag rounds have a slightly higher BC at .553 while the .300 WSM has an average of .520. They are used for a lot of the same shooting and hunting applications but these two cartridges are not interchangeable. After all, the .300 Win Mag is a rifle that has become known for its versatility and precision; hard hitting power and its accuracy. While the .300 WSM has a slightly longer supersonic flight than the .300 WM, on average, it is only by thirty yards. Furthermore, the muzzle energy of a .300 Weatherby Magnum round averages out to 4070 ft-lb, while a .300 WSM Winchester Short Magnum round averages out to about 3580 ft-lb. One aspect that has changed by adding the extra rounds is that the .300 WSM seems to keep its slight advantage over the .300 WM rounds out past the 200 yard mark. Please note, the following information reflects the estimated average ballistics for each caliber and does not pertain to a particular manufacturer, bullet weight, or jacketing type. The difference between the two averages remains just about constant as the rounds move downrange to the 500-yard mark where the averages for the WM and WSM are 58.2lb/f.s and 22.3lb/f.s respectively. If your particular rifle can handle them, then it’s not an issue at all. In the Federal Vital-Shok, 6.5 Creedmor works out to $1.72/round, while.300 Win Mag comes out to $2.40/round. All of them still carry a tremendous amount of energy at these extreme ranges when it comes to hunting though with all of the rounds bringing more than 1,500ft.lb with two rounds still carrying over 2,000ft.lb, one .300 Win Mag and one .300 WSM. From 300 to 500 yards, the difference shrinks between those two rounds and the other eight. Like any category when dealing with cartridges, we are not going to be shooting the averages. Mag.’s 25-degree shoulder. As you will see, with the increased sample size, we still see the trends we see when looking at the ten specific rounds that we will compare and discuss, which should give you some peace of mind that the graphs and discussions that come from them are an accurate representation of how these two cartridges compare and contrast. How much this extra velocity aids in accuracy isn’t something we can adequately determine in this article. is a classic “standard-length” cartridge based on the belted 375 H&H Magnum case. The averages show the .300 Win Mag has around half an inch less of altitude loss at the 300 yard mark but when you look at all of the individual rounds, their distribution make all of them seem like the same cartridge type. We will also try to tie everything back together at the end of the article to discuss which applications each of these cartridge types might be best suited. The physics just doesn’t allow them to stay as flat while still being manageable in other categories. Generally, for factory loads, they are going to hover around these numbers, but if you need a high BC, there are probably rounds of both cartridges available out there and most definitely so when it comes to hand loads. Generally, the savings in length are approximately 2.5” when using a 24” barrel as opposed to the optimal 26” barrel length for the .300 Win Mag… The ten rounds we have graphed for this article are listed below. We are in the party that all of this points of comparison play a role in stopping power. 300 PRC vs 300 WIN MAG!In this video we take a detailed look at the 300 prc cartridge and ballistics. We will also compile this data in the applications section. The difference in how low the bullet sits in the casing is negligible and results in the .300 Win Mag being able to hold a greater amount of powder though the case capacity does not represent how much powder is loaded into each cartridge. If it gives you the performance, you want a few extra dollars a box is not going to be an issue. The first thing that we notice when looking at this graph is that all the rounds from each cartridge have pretty high ballistic coefficients and some from each have excellent ones. The Accubond bullet design gives you deep penetration on large game with controlled expansion to provide a lot of damage. At the 300 yard mark, we still see the rounds interspersed, but we do see an increase in the difference between the averages of the two cartridges. But the.300 H&H's place atop the.30 caliber magnum market was short-lived. So, we don’t think one cartridge has an advantage over the other. Most weights are within the 150-200 grain range, but there are several lighter and heavier rounds available. From this data set, the .300 Win Mag still has a slightly higher sectional density than the .300 WSM rounds. What’s the point of using a round if it can’t be put on target? And of course, this is not taking into account the rifle or the user. From these numbers, we don’t see huge differences between the two cartridge types. We just don’t think it’s the best method for looking at two cartridges with a broad view and being able to present you with data that remains consistent. Finally, we did see some differences in the recoil energy that is generated between these two cartridges. The gap between the two is not as wide with the extra rounds and we are only seeing a little over two ft.lb of difference between the averages. Even at 500 yards this round still carries 2,016ft.lbs of energy, so range and stopping power is not an issue even for larger game. That just happens to be the case when looking at the .300 Win Mag vs .300 WSM. Velocity is an important property of bullets for several reasons. Looking only at the averages, the .300 WM hold around a 50-100ft.lb advantage over the .300 WSM from the muzzle out to 500 yards. Both have rounds with very high BCs and both have rounds on the lower end of the scale. These bullets need a proper amount of speed to get the correct terminal ballistics. Both the .300 Win. One way to think about this is as such: a foot-pound is a unit of energy equal to the amount of energy required to raise a weight of one pound a distance of one foot. As a general rule, you want at a minimum of 1,000 ft.lb force when trying to take down larger game, and probably more in the 1,500+ range when talking about bear, elk, and moose which these cartridges are often used for. We are not under the impression, nor do we want to make the impression, that all rounds available are going to fall within this range. The .300 WSM (Winchester Short Magnum) is the most popular and widely distributed of the modern crop of short magnum cartridges in terms of both factory loaded ammunition and rifles available. Both of these cartridges have the potential for long range shooting applications, so while we are discussing velocity, we wanted to look at the distance these rounds can travel (approximately) while maintaining supersonic flights. While bullet energy isn’t everything you need for stopping power, it is still an important part, and these numbers should make you feel more comfortable when taking a shot. Best 9mm Ammo 2019 [Self-Defense & Target], 6.5 Creedmoor vs .243 Win – Cartridge Comparison, Best .40 S&W Ammo: Self Defense & Target Practice. Where calculations are made, we will be sure to make clear our variables. The .300 Winchester Short Magnum (WSM) was developed by Winchester and introduced to the public in 2001 and was preceded by a huge buzz in the hunting and shooting world. Furthermore, the muzzle energy of a .300 Weatherby Magnum round averages out to 4070 ft-lb, while a .300 Winchester Magnum round averages out to about 3520 ft-lb. We have also a 1,000 yard mark for further comparison. As illustrated in the chart, .300 Weatherby Magnum rounds - on average - achieve a velocity of about 3230 feet per second (fps) while .300 WSM Winchester Short Magnum rounds travel at a velocity of 3080 fps. We didn’t see any huge difference in velocity from the averages of the cartridges out of the muzzle. Both cartridges have options with .6+ BCs which are going to be intriguing for the long range guys. It is a great cartridge but a near twin to the .300 Winchester Magnum. There can be no doubt that both are outstanding rifle cartridges. We looked at the ballistic coefficients for all of these rounds and saw that the .300 Win Mag had a slight increase in their average BCs over the .300 WSM. When you buy through links on our site, we may earn an affiliate commission. .300 Win Mag Federal Vital-Shok Trophy Bonded 180gr, 300 Win Mag Federal MatchKing BTHP Gold Medal 190gr, .300 Win Mag Nosler Trophy Grade AccuBond Long Range 190gr, .300 Win Mag Barnes Precision Match OTM 220gr, .300 Win Mag Hornady Superformance SST 180gr, .300 WSM Winchester Expedition Big Game 180gr, .300 WSM Federal Vital-Shok Trophy Bonded Tip 165gr, .300 WSM Hornady ELD-X Precision Hunter 200gr, .300 WSM Barnes VOR-TX TTSX Boat Tail 165gr, Nosler Trophy Grade AccuBond Long Range 190gr, Black Hills Match Boat Tail Hollow Point 190gr, Federal Vital-Shok Trophy Bonded Tip 165gr, Hornady American Whitetail Interlock 165gr, Nosler Trophy Grade Long Range ABLR 190gr. If we look at the graph, the first thing you should notice is that all ten rounds generate a pretty significant amount of recoil with all over 24ft.lbs of energy. If you go out to the 400 yard mark, the .300 WSM rounds have an average of 0.7 inches of bullet loss. In the simplest of terms, the ballistic coefficient is a number that is derived from an equation taking into account a variety of bullet flight specs. And that is usually a tradeoff you get with heavier rounds. And you can never minimize the impact the person holding the rifle has on accuracy. The .300 Win Mag has also been used by snipers in special forces and military circles, but the majority of its use is in the hunting world. The .300 Win Mag takes a 30-cal bullet as does the .300 WSM. We also want to note that all of the data here is computer generated. The biggest difference between these two cartridges is not the ballistics, but in the rifle platforms they can be used. Before getting into the specifics, if we just look at the graph, several points of discussion come up. There is no doubt, that accuracy is incredibly important. On impact, this kinetic energy is transferred to the target where it causes damage to surrounding tissue and organs. Interestingly, we do see a little more separation between these two cartridges at the 1,000 yard range. As penetration is only a piece of the puzzle for stopping power, the sectional density is only a piece of the larger picture when it comes to penetration. To get a little better idea of how the two compare, let’s look at the averages for our larger sample set. While the differences between the two cartridges are the same amount, the slight advantage in kinetic energy has flipped from the .300 WM to the .300 WSM rounds at the muzzle and 100 yards. Mag. While we saw slight increases in the averages for SD and bullet momentum for the .300 WM, the .300 WSM were not far off at all and there are rounds that provide high performance in both categories. 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