8x57 out of a 7.92pr Spanish mauser - Page 2


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Old 03-31-2014, 01:54 PM   #11
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Quote:
Originally Posted by gschnarr View Post
The remington 8 Mauser round is under loaded. It is in the 30-30 range. Because of concerns about the possibility of someone shooting the round in an early mauser that has a .318 bore rather than the .323, American manufactures under load the round. European ammo is loaded to full power.
Wrong !..............


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Old 03-31-2014, 02:02 PM   #12
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7.92×57mm Mauser; ie 8.08 mm / .318 (I and IR) and the rimmed 8×57mm IRS cartridges; ie 8.20 / .323" (IS and IRS) are not the same & can NO way be fired in the same rifle !.............



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Old 03-31-2014, 02:05 PM   #13
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Quote:
Originally Posted by gschnarr View Post
The remington 8 Mauser round is under loaded. It is in the 30-30 range. Because of concerns about the possibility of someone shooting the round in an early mauser that has a .318 bore rather than the .323, American manufactures under load the round. European ammo is loaded to full power.
Is 8x57 surplus ammo .318 or .323?
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Old 03-31-2014, 03:35 PM   #14
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Originally Posted by cva209x50 View Post
Is 8x57 surplus ammo .318 or .323?
8mm Mauser, or 8x57 is 7.92×57mm Mauser; ie 8.08 mm / .318 (I and IR) !...............

http://www.midwayusa.com/find?sortby=1&itemsperpage=24&newcategorydimension id=20607
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Old 03-31-2014, 04:17 PM   #15
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Here is a better way to explain it !..............

8X57JR Mauser
Introduced: 1900
8mm Mauser case W/rim
Twist: 8.5"
Made expecially for combination guns such as Drilling
8X57JRS mauser
Introduced: 1905
Rimmed 8X57 Mauser case
with "S"
bullet. (Spitzer)
Twist: 8.5"
Rimless Necked:
Dia: Rim: .473"
Shoulder: .431"
Mouth: .3493"
Bullet: .3230"
Length:
Base to Shoulder: 1.8273"
Case: 2.240
Overall: 3.250"
GERMAN 8mm (7.92mm) CARTRIDGE:
Introduced: 1888
OTHER Names: 8X57mm
7.92mm Mauser
7.9mm
8X57mmJS
8mm Mauser
Type: Rimmless, necked CF
Length: 2.765"
Wt: 378gr
Powder: Nitrocellulose
Primer: Boxer (Lg rifle)
BULLET:
Type: Soft Point
Dia: .321" Thru 1904
.0323 Aft 1904 S or JS
Wt: 170gr
Length: .915"
Dia Rim: .473"
base: .470"
neck: .351"
Mouth: .3493"
Shoulder: .4314"
Base to Shoulder: 1.8273"
Case: 2.240"
Overall: 3.250"
Muzzle velocity: 2530 f.s.
pressure: 47000lb sq.in.
Note: Curent ammunition is this caliber is not recommended for this model, as the chamber pressure exceeds 47000 lb
Sq.in.
Factory Ballistics:
Bullet: MV: ME:
123gr 2887 2277
159gr 2723 2618
196gr 2526 2778
198gr 2625 3031
200gr 2320 2390
227gr 2330 2737

The 8mm Mauser is one of the world's truly great military cartridges. It was the official German military caliber in both world wars and was also adopted by Czechoslovakia, Poland and other countries. It is also a popular sporting round in many parts of the world. Although designated the 8mm Mauser, the original military round was designed for the German Model 88 infantry rifle,
which was a modified Mannlicher-type not a Mauser design.

This rifle is known officially as the Gewehr (Rifle), or German Infantry Model 1888. It was designed by the German Infantry Board of Commission at Spandau Arsenal. It was
replaced in 1898 by the superior Mauser Model of that year. The original 8 (7.92)mm cartridge used a round-nosed, 226 grain bullet of .318: diameter. Muzzle velocity was 2093fps. In 1905, the Germans adopted an improved cartridge that retained the original 8X57mm case, but employed a larger diameter bullet of .323". The new bullet was lighter at 154 grains and was of pointed, or spitzer-type. Muzzle velocity was upped to 2880 fps. All German military rifles manufactured since 1905 have the .323" bore.

The German 8mm military cartridge is designated by a "J" for "Infanterie" (The J & I are interchangeable) The late .323" bore or caliber is indicated by an "S" for Spitzer-type.
Sporting ammunition in 8mm is labeled by the same system. The 8X57J or 1888 cartridge can be fired safely in the 1905 or "S" Bore, though accuracy is poor. However it is not safe
to fire the larger "S" (.323") bullet in the smaller "J" (.318" bore.

WARNING! Many J bore (.318") rifles still exist and will fire S bore (.323") cartridges, creating dangerous pressures.

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Old 03-31-2014, 10:03 PM   #16
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Quote:
Originally Posted by 303tom View Post
Here is a better way to explain it !..............

8X57JR Mauser
Introduced: 1900
8mm Mauser case W/rim
Twist: 8.5"
Made expecially for combination guns such as Drilling
8X57JRS mauser
Introduced: 1905
Rimmed 8X57 Mauser case
with "S"
bullet. (Spitzer)
Twist: 8.5"
Rimless Necked:
Dia: Rim: .473"
Shoulder: .431"
Mouth: .3493"
Bullet: .3230"
Length:
Base to Shoulder: 1.8273"
Case: 2.240
Overall: 3.250"
GERMAN 8mm (7.92mm) CARTRIDGE:
Introduced: 1888
OTHER Names: 8X57mm
7.92mm Mauser
7.9mm
8X57mmJS
8mm Mauser
Type: Rimmless, necked CF
Length: 2.765"
Wt: 378gr
Powder: Nitrocellulose
Primer: Boxer (Lg rifle)
BULLET:
Type: Soft Point
Dia: .321" Thru 1904
.0323 Aft 1904 S or JS
Wt: 170gr
Length: .915"
Dia Rim: .473"
base: .470"
neck: .351"
Mouth: .3493"
Shoulder: .4314"
Base to Shoulder: 1.8273"
Case: 2.240"
Overall: 3.250"
Muzzle velocity: 2530 f.s.
pressure: 47000lb sq.in.
Note: Curent ammunition is this caliber is not recommended for this model, as the chamber pressure exceeds 47000 lb
Sq.in.
Factory Ballistics:
Bullet: MV: ME:
123gr 2887 2277
159gr 2723 2618
196gr 2526 2778
198gr 2625 3031
200gr 2320 2390
227gr 2330 2737

The 8mm Mauser is one of the world's truly great military cartridges. It was the official German military caliber in both world wars and was also adopted by Czechoslovakia, Poland and other countries. It is also a popular sporting round in many parts of the world. Although designated the 8mm Mauser, the original military round was designed for the German Model 88 infantry rifle,
which was a modified Mannlicher-type not a Mauser design.

This rifle is known officially as the Gewehr (Rifle), or German Infantry Model 1888. It was designed by the German Infantry Board of Commission at Spandau Arsenal. It was
replaced in 1898 by the superior Mauser Model of that year. The original 8 (7.92)mm cartridge used a round-nosed, 226 grain bullet of .318: diameter. Muzzle velocity was 2093fps. In 1905, the Germans adopted an improved cartridge that retained the original 8X57mm case, but employed a larger diameter bullet of .323". The new bullet was lighter at 154 grains and was of pointed, or spitzer-type. Muzzle velocity was upped to 2880 fps. All German military rifles manufactured since 1905 have the .323" bore.

The German 8mm military cartridge is designated by a "J" for "Infanterie" (The J & I are interchangeable) The late .323" bore or caliber is indicated by an "S" for Spitzer-type.
Sporting ammunition in 8mm is labeled by the same system. The 8X57J or 1888 cartridge can be fired safely in the 1905 or "S" Bore, though accuracy is poor. However it is not safe
to fire the larger "S" (.323") bullet in the smaller "J" (.318" bore.

WARNING! Many J bore (.318") rifles still exist and will fire S bore (.323") cartridges, creating dangerous pressures.
I can't find my calipers so I measured the bore diameter with a tape measure 5 times (to compensate for lack of precision). It came out to between 5.125/16"-5.5/16". That converts to .320"-.326". Considering I used a 1/16" tape measure, does that sound about right for a large ring Mauser?
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Old 03-31-2014, 10:10 PM   #17
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Quote:
Originally Posted by cva209x50 View Post
I can't find my calipers so I measured the bore diameter with a tape measure 5 times (to compensate for lack of precision). It came out to between 5.125/16"-5.5/16". That converts to .320"-.326". Considering I used a 1/16" tape measure, does that sound about right for a large ring Mauser?
you can't accurately measure the bore of a rifle with a tape measure. you need to measure the lands and grooves and the proper way is to slug the barrel and then measure the slug with micrometer.

there is no way you can discern the difference between .323 and .318 with a tape measure. that's only .005 difference.
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Old 03-31-2014, 10:36 PM   #18
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A long time ago I picked up a sporterized 98 Mauser. The 1st thing I did was take it to a gun smith to check the camber and bore. The chamber was also checked with go-no go gauges. Dont trust any modified military rifles. A lot of them were modified to wildcats like the 8mm06 which was popular at the time. Some of them were really butchered.

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Old 04-01-2014, 12:08 AM   #19
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It is ok to be safe, but really? The info that is posted as "fact" is not quite correct.
The '88 Commision rifle was a .318, but ones stamped w/ an "s" are rebarreled for moderate modern ammo such as American made. The 1895 was originally .318, but was rebarreled/rebored by Germany, Turkey, S. American countries and Spain to .323. In 1898, all Military rifles were made in .323. What the OP has is a K98k w/ a sporter stock. The Bolt, rear sight, front sight, even the trigger guard are K98. OP, Send me a PM. I can give you more info. I can also send you some ammo that will make you "feel" the recoil.



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