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What is 8mm Rimmed Mauser Ammo? 🤨
It is a type of ammunition designed for the 8mm Mauser rifle. The 8mm Mauser was originally developed in Germany and used by military forces around the world. It is a rimmed cartridge, meaning that the bullet is encased in a metal case that has an opening at the base, allowing it to be loaded into a rifle chamber. This type of ammunition is usually used in hunting or target shooting and offers good accuracy and performance.
The 8mm Rimmed Mauser is a rimmed round with a straight-walled, semi-rimmed cartridge case.
- 💥 This design allows for improved accuracy and terminal ballistics than other rounds of the same caliber.
- 💥 These rounds are capable of producing huge amounts of energy, with muzzle energies exceeding 3,000 ft-lbs in some loads, making them ideal for hunting large game animals such as deer or boar.
- 💥 It also has excellent accuracy due to its straight-walled case design and its uniform bullet diameter. This can result in fewer flyers when shooting at long-distance targets.
- 💥 Provides shooters with options to meet their specific needs and preferences when it comes to selecting ammo for their firearms.
- 💥 Additionally, reloaders can find unprimed brass cases for handloading their customized rounds using powders specifically tailored for this round’s unique pressure curve.
The 8mm Rimmed Mauser (8x57mm JRS) Ammo is an excellent choice for hunters and target shooters alike.
- ❇️ It offers superior accuracy, dependability, and a powerful punch that can take down even the toughest game. With its rimmed design, it’s also easy to reload in the field.
- ❇️ This ammo provides superior ballistic performance with a wide range of bullet weights from 150 to 200 grains, offering great flexibility for different hunting scenarios.
- ❇️ It typically has a higher velocity than standard 8mm rounds with a muzzle velocity of up to 2,800 feet per second depending on the weight of the bullet. This makes it ideal for long-range shooting as well as taking down large games like deer and elk.
- ❇️ Such ammunition is also highly reliable thanks to its rimmed design which allows for more consistent chambering and extraction when compared to other designs like belted or bottleneck cartridges.
- ❇️ Moreover, it is designed to be tough even in harsh weather conditions with its waterproof primer which helps ensure functioning even in rain or snow.
JS vs JRS: what’s the difference? 🧐
When it comes to 8mm ammo, the Mauser JRS and JS are two types of rounds that can be confusing. They’re both 8x57mm rimmed cartridges, but there are subtle differences between them. Let’s take a look at what those differences are:
➡️ The first difference is in their respective bullet weights.
- 🔶 The Mauser JRS has a lighter bullet weight than the JS, meaning it carries less energy and requires less powder for ignition. This makes the JRS more suitable for hunting small game as its recoil is considerably lower and therefore easier to control.
- 🔶 On the other hand, the Mauser JS is loaded with heavier bullets, meaning it has more energy and is suitable for larger games such as deer or hogs.
➡️ The second difference between the two rounds is their case length.
- 🔶 The Mauser JRS has a shorter case length than the JS, which means that it fits into a smaller action. This makes the JRS ideal for hunting in dense brush where maneuverability is key.
- 🔶 On the other hand, the Mauser JS has a longer case length which allows for more powder and therefore more power per shot compared to its smaller counterpart.
➡️ When comparing the accuracy between these two types of cartridges, the Mauser JRS tends to be slightly more accurate than the JS. This is due to its shorter case length which increases stability in flight and minimizes muzzle drift.
📌 The Mauser JRS offers lower recoil, greater maneuverability, and improved accuracy while the Mauser JS delivers increased power and size capacity. Consider carefully which option best fits your needs before making a decision.
Best 8mm Rimmed Mauser (8x57mm JRS) Ammo Reviews
1# 8x57mm JRS Rimmed Mauser – 196 gr SPCE – Sellier & Bellot
Searching for an affordable and reliable round for your next hunt? Notice the 8x57mm JRS Rimmed Mauser from Sellier & Bellot. It is perfect for taking down medium-sized games, thanks to the soft point cutting-edge bullet which expands on impact. This brass-cased, boxer-primed ammunition is reloadable and non-corrosive, making it a great choice for both experienced shooters and those just starting.
⚙️How to reload?⚙️
The process of reloading 8mm Rimmed Mauser (8x57mm JRS) Ammo is fairly straightforward and can be done with minimal equipment.
- 🛠️ Standard reloading supplies for ammo include dies, shell holders, primers, powder measure, scale, and preferably a press.
⬇️ The following steps should be followed when reloading:
- 🔰 Start by sorting out any damaged or defective cases from among the brass. Inspect each piece for signs of damage such as deep scratches or dents that may prevent it from chambering correctly.
- 🔰 Lubricate each case with a small amount of lube before sizing and de-priming. This will help prevent the cases from sticking in the dies and reduce wear on them.
- 🔰 Using your press, size each case by running it through the resizing die, which will return the brass to its original dimensions for proper fit into a gun’s chamber.
- 🔰 Once this is completed, use a de-primer tool or separate de-capping die to remove the old primer from each brass piece that was just sized.
- 🔰 Inspect every piece of brass before priming by double-checking that no foreign objects are stuck inside or that there is any damage to the case.
- 🔰 The next step is to prime each brass using a separate priming tool and primer of the correct size for this ammo. Once all cases are primed, they can be loaded with their respective powder measure and bullet.
- 🔰 Finally, weigh each completed cartridge on a scale and if necessary adjust your powder charge.
Now that you have seen our top picks for the best 8mm Rimmed Mauser (8x57MM JRS) Ammo, it is time to make a decision. The ammo reviewed here should give you a good idea of what is available on the market and help you make an informed purchase. Remember, quality counts when it comes to ammo, so be sure to choose a reputable manufacturer. As always, practice safe shooting habits and enjoy your next outing! 🤠👍
I recently picked up an m24/57 Mauser and I’ve been looking at ammo for it. I see 8×57 and 7.9×57 and some have JS at the end. Are these the same or what should I be using in my m24/47? Sorry if this is a dumb question, any info will help. Thanks
Same cartridges. 8×57 IS (Also designated JS, S, or S-patronen) 7.92×57, and 7.9×57, are all the same cartridge by slightly different names. If you get into reloading, use bullets that are .323 in diameter. 8×57 I (also designated J) is a .318 caliber projectile designed for the old Gewer 1888. In 1905, the german military made slight modifications to the design to create the 8×57 JS that your rifle uses. you will occasionally run into 8×57 JRS, which is a rimmed cartridge designed for double rifles and drillings, they will not work in your Mauser.
Can I use 8×57 JS and 8mm Mauser Interchangeably?
They are different terms for the same thing. Yes. JRS is a rimmed cartridge being the exception.
8mm is 7.92x57mm. JS is a holdover from when the 1888 commission rifle was replaced by the 1898 Mauser. The bullet was originally a .318 diameter 8mm Mauser for 1888, but they updated the cartridge to .323 when they switch to 1898. Since both rifles briefly were in service at the same time and the .323 bullet will cause significant issues in 1888, they added the “JS” to distinguish the two almost identical cartridges.8x57mm JRS was the “civilian” version with a rim since at the time, civilians weren’t allowed to have weapons chambered in “military” cartridges in Germany. Since a .318 diameter 8mm Mauser hasn’t been produced for nearly 100 years and your rifle isn’t 1888, you’ll be fine as long as the rifle is in good working order.
Yes, 8mm Mauser, 8×57, and 7.92×57 are all interchangeable and are used in the same rifle, the only one you should watch out for is the “8x57JRS” which is a rimmed variant and will not work in your rifle. The main reason why it has so many different designations is basically that it went from being an official military cartridge for a long time to a civilian one and each designation has its own story of how it came to be.
What do you think? I asked my FEO today about an 8x57mm jar for boar. He told me that it was unlikely that I would be allowed it because of the size. However, I know of a stalker not 10 miles from me with a 300 win mag and I am quite sure that the 300 win mag is bigger than the 8×57 am I right? Bare in mind I have had 3 full bore rifles for the past 25 years with no problems at all. Do you think he may be being over cautious as he did admit that he did not know much about continental calibers? Also, he would not try to cause trouble as he is the most helpful I have ever met.
300mag is 7.62mm and a large case. 8mm is 7.92(i think) and less powder. so slightly bigger in the bore but has less case/power. it shouldn’t matter what it is if it’s for abroad.
8x57JRS or 8×57 IRS as it is sometimes marked should be no problem at all. It’s the rimmed version of 8mm Mauser and not just perfectly legal but very popular. Power-wise it’s about the same as .30-06 and with the right bullets perfect for everything from small deer right up to the heaviest boar, though the refers to it as a small caliber about boar. I suggest that your FEO go and do his homework and find out a little bit more about this cartridge. I use bullets ranging from 175 grams up to 220 grams in mine though the most popular bullet weight is normally 196 guns.