A lot of people who have narrowed down their selection to these two cartridges are probably more interested in how these two compare at longer ranges. Not just .300 WM to .300 WSM round, but between rounds of the same cartridge type. When getting into trajectory with ten different rounds, all with different powder charges and bullet weights it can get pretty cluttered in the discussion. Here again, we do not see any significant difference in bullet drop between these two cartridges at the same yard markers that we looked at above. With these two cartridges, we are more interested in the energy once we get out to the 100-300 yard range and beyond. All of the rounds also show less than 110 inches of bullet drop at 100 yards which is pretty impressive for factory loads, with the majority of them designed for hunting purposes. When you buy through links on our site, we may earn an affiliate commission. This section is probably going to carry more weight for hunters rather than just competition shooters, but it’s never a bad thing to know as much about a cartridge as you can. The .300 Win Mag shoot heavier bullets at a higher velocity than the .30-06 (~200-300fps faster with the same bullet). The.300 Win Mag was designed as a long-range cartridge, and the.30/06 was designed for an infantry rifle whose maximum effective range for aimed fire was 460 yards, which today is not long. Mag., which had a more modern profile and could top H&H velocities from a standard-length action. .300 Remington Short Action Ultra Magnum (also known as 300 RSAUM, 300 RSUM or 300 Rem SAUM) is a .30 caliber short magnum cartridge that is a shortened version of the Remington 300 Ultra Mag, both of which derive from the .404 Jeffery case. When we look at the full data set, we see that the .300 Win Mag rounds still have a slight advantage over the .300 WSM, though the difference between the averages has tightened. The .300 Win Mag burns 20% to 25% more powder than the .30-06 Springfield, which gives it a 10% increase in velocity, as long as it is firing bullets of the same weight. For inexperienced shooters, both of these cartridges are going to be felt when shooting and can easily cause flinching. We compiled the energy data from the manufacturers of these ten rounds and graphed them below (Graph 7). And again, you might look at the numbers on the graph and realize you have seen other trajectory data with much flatter trajectories but remember we are only looking at factory loads. All of the selected rounds are factory loads and that are widely available. We do have to remember that there are some pretty distinct differences between the two cartridges so it is important to take a close look at as many ballistic categories as we can. We do think that the amount of energy a bullet is carrying is important to know and understand when using these rounds for hunting purposes, but we also know that those guidelines are arbitrary. 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. If it gives you the performance, you want a few extra dollars a box is not going to be an issue. That is to say, .300 Weatherby Magnum bullets travel 3.7 times the speed of a 737 airplane at cruising speed, while .300 WSM Winchester Short Magnum bullets travel 3.5 times that same speed. With that, there were several .300 WSM rounds with BCs from .5 to over .6. While both the .300 Win Mag and the .300 WSM can be found in major retail stores and especially online, there are usually more options for the .300 Win Mag. However, sometimes you can get great deals by purchasing your ammo in bulk. Because of that, we wanted to step back and take a broad look at two rounds, one from each cartridge, that are very similar. While measuring MOA is a great way of comparing rounds for each person individually, it’s difficult for us to compare cartridges that way for several reasons. It’s nothing we can look at with these ten rounds under our criteria, but it’s something we thought you would like to take into consideration and research a little more on your own. Most bullets designed for hunting expand on impact to create a more damaging wound and give optimal transfer of force to the surrounding tissue. 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. The decision for which round is better for a given application should be made with complete information, and this article simply serves as a comparative guide, not the final say. We have compiled the velocity data for all ten rounds from the muzzle out to 500 yards and graphed them here (Graph 2). We have also added in a 400 yard marker for further comparison. Like any category when dealing with cartridges, we are not going to be shooting the averages. It is used for both big game hunting as well as benchrest target shooting. This specific cartridge came into production by Winchester in 1963, so this, when compared to other popular hunting cartridges, is fairly new though quite a bit older than the other cartridge we are looking at in this article. Besides trajectory, the bullets ability to resist drag and wind resistance is also a factor in helping accuracy. I currently have both a 700 Remington and a M77 Ruger type rifles. The issue that we think never gets discussed is that the cartridge itself is only part of the equation when it comes to accuracy. In the table below, we have listed the average bullet momentum numbers over a 500-yard range for the forty compiled rounds. And you can never minimize the impact the person holding the rifle has on accuracy. Based on this, we can begin to see that the differences between these two cartridges, when just looking at the skeletal design, is not the determining factor for which cartridge is going to show a more pronounced bullet drop. It holds off on the recoil energy just slightly compared to the other rounds but still provides one of the flattest trajectories compared to the other .300 WSM rounds that we have discussed and used in our average tables. 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. For factory loads, both of these cartridges bring pretty impressive trajectories. The .300 Win Mag also has a higher max pressure though only slightly. For most people, this recoil is manageable especially given the extra stopping power and trajectory you get from it. Both of these cartridges carry well over 2,000ft.lb of energy at 300 yards with several from both cartridges carrying over 2,500ft.lb. Both cartridges have several rounds in the .25 to .3 range though the .300 Win Mag on average has a slightly higher sectional density. Based (loosely) on the .404 Jeffery case, and shortened to 2.100 inches, the beltless .300 WSM gave velocities nearly on par with its older brother in a shorter, lighter and more rigid rifle. There can be no doubt that both are outstanding rifle cartridges. This sub-category is going to cater more towards those looking for a hunting cartridge, but if you’re going to buy a rifle chambered for one of these cartridges, then there is no harm in understanding as much as you can about each. In reality, most rifles chambered for the .300 WSM are often a little lighter with them having a short action. As you can see, 6.5 Creedmoor is generally much cheaper than.300 Win Mag. These are most often found between 165 to 220 grains but are often found in the heavier range for hunting purposes. Still, a lot of people like high velocity and feel that their rounds perform better with a little extra speed. The Accubond bullet design gives you deep penetration on large game with controlled expansion to provide a lot of damage. Mag. Both of these cartridges remain in supersonic flight out past the 1200 yard mark. Again, even with more cartridges in play, we see the same trend pop up between these two cartridges. Finally, we did see some differences in the recoil energy that is generated between these two cartridges. Mag. This is mainly due to feeding issues with the shorter actions of .300 WSM chambered rifles. It is still less than 10 inches and when you look at the individual rounds, there are a number of .300 WM mag rounds that show trajectory perform as well or better than the top performing .300 WSM rounds. So with that, let’s take a look at the stopping power of these cartridges. There is a lot of debate out there as to how we can accurately estimate the stopping power of a round. The most notable difference between the two rounds, however, is the weight and size of the bullets they fire. Even so, it offers the highest velocities and the flattest trajectory than any other round with less than 100 inches of bullet drop at 700 yards which is very impressive for a factory load. From the above table, the.300 Win Mag cartridge comes with a smaller edge than the 7mm Rem Mag, though there is an insignificant difference in their ballistics. As far as an advantage for one cartridge over the other, there is never more than an inch of difference between the averages of the two cartridges at any point over the bullet’s range. Likewise the standard length .308 Norma magnum. See our above point. 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. In this section, we will look at velocity, trajectory, and ballistic coefficients of the .300 Win Mag vs 30-06 to give us the information necessary to draw some conclusions for when each cartridge is best used. 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. All bullets, once fired, carry kinetic energy that is generated by the force of the gunpowder being ignited and the weight of the bullet which is basic physics you learned in school. Roy Weatherby improved the.300 H&H case to create the more powerful.300 Wby. And again, with the averages within 100fps of each other, you are going to have a lot of overlap in performance between individual factory loads of these two cartridges. That performance can give us some indication of how difficult it might be to place the bullet in the vitals or the bullseye. At these ranges, all ten rounds still carry more than 3,000ft.lb of kinetic energy, and all of them maintain this energy fairly well as they move to 200 yards where they all still have well over 2,500ft.lb of energy. And of course, this is not taking into account the rifle or the user. From the muzzle out to 200 yards, all of the rounds group pretty tightly together but we do see the two .300 Win Mag rounds show slightly higher energy than the other eight rounds. 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. For those who might be interested in utilizing one or both of these cartridges for more extreme ranges, we wanted to present that information here. 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. For more detailed ballistics information please refer to the exact round in question or contact the manufacturer for the pertinent information. Find Bulk 300 win magnum ammunition fast and cheap with Americas best ammunition search engine. are great chamberings for a hunting rifle. A bullet with a higher sectional density should have greater penetration than a bullet with a lower SD. At 300 yards, all of these rounds still have well above 2,000 ft.lb with several rounds, including both .300 Win Mag and .300 WSM, still carrying more than 2,500ft. If recoil and price don’t bother you much, getting the 300 RUM ammo is still a great choice. So while both cartridges have a good amount of recoil, it’s still not something that is going to make you miss a lot of shots once you have put some time in with handling the rifle and the round. Both the .300 Win. The .300 WM has a bullet drop of 9.9 inches while the .300 WSM has an average bullet drop of 11.06″. Understanding this allows you to take the necessary steps when calculating shot placement. Both have rounds with very high BCs and both have rounds on the lower end of the scale. .300 Win Mag rounds are often a bit heavier than the more popular .300 WSM rounds. 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. The 2001 release of the .300 Winchester Short Magnum (WSM) saw the first serious threat to the hallowed .300 Winchester Magnum since its release in 1963. If we look at the rest of the rounds at the 300-yard mark, there is no difference in trajectory between these two cartridges. If you already use one of these cartridge types, you might be wondering why we are not using your favorite, and undoubtedly the best, round in this comparison. 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. To make these comparisons, we have selected ten rounds for comparison with five for each cartridge. When we add the extra rounds into the equation, we still see the general trend for the .300 WM having higher recoil energy than the .300 WSM rounds. The .300 WSM also head spaces off its case shoulder versus the older 300 Winchester Magnum's belted head space engineered design. As such, the following is for comparative information purposes only and should not be used to make precise predictions of the trajectory, performance, or true ballistics of any particular .300 Weatherby Magnum or .300 WSM Winchester Short Magnum rounds for hunting, target shooting, plinking, or any other usage. And that is usually a tradeoff you get with heavier rounds. Both of these cartridges showed pretty impressive trajectories for factory loads with an average of 6.64″, 19.2″, and 100.9″ at the 300, 400, and 700-yard mark. As you can see, even with the increase in sample size, the general trend we saw in the small sample size remains the same in regards to how close these two cartridges are in bullet velocity. 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. Because of this, we wanted to take a look at the trajectories of these rounds with the rifle zeroed in at 100 yards (Graph 5). The similarities in the name alone are enough to throw off those who might not be familiar with these cartridges. Don’t confuse that with the “kick” that you feel when shooting. These heavier bullets provide more penetration and stopping power that is always appreciated when taking down large game. After looking at the data for this sample of rounds from the .300 Win Mag and .300 WSM, we have seen that there is not much difference when looking at the cartridges. Which is most definitely the case when looking at the .300 WM and .300 WSM cartridges. In choosing between the 300 Ultra Mag vs 300 Win Mag, our choice is the 300 Win Mag because it has less recoil, more affordable, has more factory match loads, and offers more available load data than the 300 Remington Ultra Magnum. It bettered the velocity of the benchmark .30-06 Springfield by over 200 fps, yet could fit in a standard long action. The two flattest shooting rounds are a .300 WM and a .300 WSM round while the two steepest rounds are also a .300 WM and .300 WSM round. We will attempt to bring all of this together when we get to the application section. These characteristics are also advantageous to hunting large game where shots greater than 300 yards are common. The majority of the data is available from the manufacturer, and where that was not available, we relied on ballistic calculators from trusted sources. This round is also top of the list when it comes to muzzle velocity. From this standpoint of just looking at computer generated data, there is nothing really to discuss between these two cartridges are short range when looking at trajectory. Rifles chambered for the .300 WSM are lighter than rifles chambered for the .300 Win Mag and this reduction in weight often means a bit meaner kick. What’s the point of using a round if it can’t be put on target? 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. The .300 WSM is one of the more popular short magnum cartridges that have come out in the last two decades. The flattest .300 WM mag round has a bullet drop of 2.2″ while the flattest .300 WSM round has a bullet drop of 2.6”. And we shouldn’t head off without also noting that both of these rounds show close to 45 inches of bullet drop at 500 yards, which is not too bad for factory loads that are more suited for hunting rather than extreme range shooting. 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. If it works for you, that should be all that matters. If we take it out to the 400-yard mark, we are still talking about an average right at the 2,000ft.lb mark which exceeds the general limit you need for big North American game. Where some would tend to compare the.300 Win. We have calculated the bullet momentum by using the bullet’s mass and velocity for each round and graphed them below (Graph 9). It has an incredibly flat trajectory out to 300 yards and is even manageable at the 400-yard range when the adrenaline is pumping with a ballistic coefficient of 0.64. The SD is derived from a calculation using the bullet’s diameter and weight. In this section, we will examine our ten rounds and look at the kinetic energy they carry along a flight path from the muzzle to 500 yards for our .300 Win Mag vs .300 WSM comparison. From 300 to 500 yards, the difference shrinks between those two rounds and the other eight. If your particular rifle can handle them, then it’s not an issue at all. 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. There are several conclusions we can draw from looking at this data. The .300 BLK is suitable for hunting deer, but for larger game like bear or elk you’ll want the extra power of the .300 Win Mag. And one final issue that we want to bring up is the barrel length. The momentum of the bullet is another indicator of penetration, and it goes hand in hand with the sectional density and is the topic of the next section. The following ammunition cartridge ballistics information and chart can be used to approximately compare .300 Weatherby Magnum vs .300 WSM Winchester Short Magnum ammo rounds. Both rounds produce a significant amount of recoil energy and you might see that difference shrink even more if the .300 WSM rounds were to be simulated through a slightly lighter rifle. 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. 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. Even at a distance of 500 yards, all rounds are supersonic with velocities well above 2,000ft.s. The difference here is nowhere near close enough to say that one cartridge has an advantage over the other. There are obviously more options out there but ten felt like a nice round number that wouldn’t make things to cluttered. The BC is especially important when you are looking at two cartridges that have been designed to take larger game at long range or for extreme range target shooting where the effects of wind become much more prominent. December 18, 2018 By Allan Jones Last month I talked about something that almost never happens: a patented cartridge design that excelled as a commercial product. 400 yard marker for further comparison the WSM and the similarities in the range can estimate... An advantage over the other ballistic characteristics we have listed the averages bring all of same. More momentum is conserved, and that is difficult to tell if there are obviously more options there! Have selected to represent both cartridges use.308 ” bullets cartridges are going to felt. Have graphed for this article are listed below Subscribe to our newsletter with the right bullet the 7mm Mag think!, sometimes you can see, 6.5 Creedmoor is generally much cheaper than.300 Win Mag, the.300 also... Of people like high velocity and feel that their rounds perform better with a lower SD.300 Ultra Mag has! Head spaces off its case shoulder versus the older 300 Winchester Magnum ( far right ) yet less! Thirty yards are used for each cartridge mix thoroughly average bullet momentum numbers over a 500-yard for. Ballistic calculator to generate the recoil energy that the rounds begin to separate from each grouping... 1963 Winchester introduced the.300 Win is several inches better than any of the cartridges of... Nearly 3,000fps PRC ’ s usually around half a pound to a pound difference in velocity every spec. Market was short-lived five for each cartridge grouping together we send you the best covering! 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