Both have rounds with very high BCs and both have rounds on the lower end of the scale. So, we don’t think one cartridge has an advantage over the other. For those reasons, the two cartridges have very similar case capacity, but the 7mm Rem Mag can hold a tiny bit more powder than the 7mm WSM. We have also a 1,000 yard mark for further comparison. 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. However, the handloader can take advantage of modern advances in powder technology and actually exceed the velocity of the MK 248 MOD 1 cartridge while still loading to maximum SAAMI cartridge overall length, and maintaining safe pressure. Both cartridges also offer a substantial increase in power, both in terms of bullet frontal surface area and kinetic energy, over the 300 Magnums as well. The 7mm Remington Magnum is one of the most popular centerfire rifle cartridges in North America and is likely among the Top 10 best selling rifle cartridges in the United States. If you are on the range, we like the .300 WSM Barnes VOR-TX TTSX 165gr round. 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. As fans of the Winchester Short Magnum cartridges like to point out, the 325 Winchester Short Magnum likely does gain some accuracy benefit from its shorter powder column. Because of that, we will strictly focus on energy that the bullet carries and will be transferred to the target and the potential amount of penetration you will get on the target. The .270 Win has a relatively flat trajectory itself, but the 270 WSM had a small, but definite advantage in this area. 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.

Maybe, but I doubt that it’s a big enough difference to really matter. However, while those that may well contribute to better accuracy, there are many other factors that influence accuracy to a much larger degree. The shortened barrel length along with reduced powder charge makes the .300 WSM less What about accuracy of the 300 Win Mag vs 300 WSM? This makes sense since the 270 WSM is specifically designed to fit in a short action rifle instead of a standard length action like the .270 Winchester.

However, the 8mm bullets (.323″) used by the 325 WSM (as well as the 8mm Mauser, 8mm Rem Mag, and 8×68 S) are not nearly as easy to find in the United States. The answers to the above questions really depend on the rifle, ammunition, and shooter in question though. Again, like most of the other categories, there is a lot of overlap between the two cartridge types, at least with the rounds we have selected. Outside of the bullet design, which is going to provide controlled expansion to deliver penetration as well as deliver the huge amount of kinetic energy this bullet carries, it also carries a ton of momentum. On top of that, this round has an incredibly flat trajectory at 300 and even 500 yards and a BC of .597 which will make things a bit easier when dealing with less than ideal wind conditions in the field.

So your rifle is going to be a major factor in the velocity of these rounds being a pro or con. It is an excellent cartridge choice for all plains game under 680 kilograms (1,500 lb). However, the 325 Winchester Short Magnum doesn’t have a closely related standard length cousin that’s widely used in North America.

and the .308 Win. If we take a look (Graph 4) it’s difficult to tell if there are even two separate lines. Wildcatters soon produced the .30-338 Winchester and Norma Projektilfabrik, who were by now manufacturing ammunition for Weatherby, took the standard length basic Weatherby brass and necked it down to .30 caliber (7.62 mm) and called it the .308 Norma Magnum. Even at a distance of 500 yards, all rounds are supersonic with velocities well above 2,000ft.s. [citation needed]. So, depending on the exact rifle model in question, it’s likely that one chambered in 325 WSM will be somewhat shorter and handier as well as potentially a little lighter. After all, fans of the Winchester Short Magnum cartridges like to point out the benefits of the shorter and fatter powder column. Compared with the 30-06 Springfield the .300 Winchester Magnum provides a roughly 400 ft/s (120 m/s) increase in velocity. Controlled expansion bullets such as the Nosler Partition or Barnes X are preferred rather than more lightly constructed bullets for these larger species of ungulate.

The design has no parent case and is based off a .308 bullet with a 1:10 twist and large rifle .500 Nitro Express 3-Inch, 9.3x74R, .257 Weatherby Magnum, .45 Smith & Wesson Schofield, 10.57mm (.416) Lazzeroni Meteor, .375 Weatherby Magnum, .475 Nitro Express Number 2, .450 Dakota, .38-55 Winchester, .270 Winchester Short Magnum, .38-40 Winchester, .300 Winchester Short Magnum, .338 A Square, .375 Ruger, .338 Lapua Magnum. For big game hunting, the Hornady 200gr Precision Hunter is a great choice. For inexperienced shooters, both of these cartridges are going to be felt when shooting and can easily cause flinching. The 270 WSM does indeed have a flatter trajectory and more resistance to wind drift than the .270 Winchester. All of the selected rounds are factory loads and that are widely available. In today’s world, better to sugar coat it than to sound like we may be mocking. The .300 WSM has a standard bullet diameter of .308 or 7.62mm and takes advantage of the numerous bullet options available in that caliber. Calculates the ballistic trajectory of a bullet fired from a rifle, handgun or other firearm. Velocity, when paired with the correct barrel twist can make the bullet more stable. 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.

While the averages were slightly in favor for the .300 Win Mag (around 50 more fps), there were individual rounds, for both the .300 WM and .300 WSM that outperformed the other rounds in muzzle velocity. (Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives) rulings the .300 Winchester Magnum can handle up to 430.00 MPa (62,366 psi) Pmax piezo pressure. The 325 WSM also has a slightly higher maximum SAAMI pressure than the .338 Winchester Magnum (65,000psi vs 64,000psi).Unlike all the other comparisons in this article, the 325 WSM and .338 Win Mag use different sized bullets. The 270 WSM and 325 WSM are more of a mixed bag, but offer advantages to hunters in certain aspects as well and this is reflected in their popularity in particular segments of the hunting community as a whole. While I would not describe the 7mm WSM as a rare or hard to find cartridge, it’s not especially popular or widely available. In that same vein, those fat, stubby 7mm WSM cartridges with their very steep shoulder angle can sometimes present feeding problems. While rifles like the Winchester Model 70 were produced in that chambering for several years, I’m not aware of any rifles currently manufactured in 7mm WSM. Hand loading brass ranges from 130 grain at 3,500 ft/s up to 220 grain at 2,600 ft/s depending The two cartridges have a virtually identical trajectory out to 400 yards, but the less aerodynamic .338 bullet starts to drop off in performance at longer range compared to the 325 WSM. We will also compile this data in the applications section. The two Hornady loads fired the same bullet with a scant 30 fps of difference between them, with the .300 Win Mag having a tiny velocity edge.

We will attempt to bring all of this together when we get to the application section. That’s not meant to be a knock on the Winchester Short Magnum line either. Additionally, the 7mm Remington Magnum is a traditional belted magnum while the 7mm WSM has a rebated rim and no belt.

It was by no means the first cartridge designed in the magnum category as the popular 7mm Remington Magnum was released the year prior, but the .300 WM seemed to come out at the right time. The same goes for guns: rifles chambered in 7mm Remington Magnum are extremely popular and very commonly in the United States. 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. Below you can see the differences between the 325 Winchester Magnum and the .338 Winchester Short Magnum in terms of external dimensions. .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. So, while the rifle chambered in 300 WSM is not significantly lighter, it’s a tiny bit shorter and handier. Bullet Style: AccuBond Use: Deer, Elk & Moose Sized Game 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.

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