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Reloading the 8mm Mauser

Discussion in 'Handloading and Reloading' started by gpurp, Jun 21, 2012.

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  1. gpurp

    gpurp Member

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    Took my recently purchased 1943 K98k to the range last weekend to see what the 8mm would do. I had a box of Remington of 170gr SP and PRVI 196gr SP. According to the Chrony I was getting and average of 2204 fps from the Remingtons and 2196 fps from the PRVIs. This is a little better that what I expected after hearing about how modern 8mm commercial loads were neutered.

    At 50 yards the Remington's shot near point of aim. The PRVI's shot about 2" high and to the left. Unfortunately at $34/box I won't be buying any more Remington ammo.

    Now that I have some fresh fired brass in my hands its time to reload. I see that IMR 4064, 4350, and 4895 are common powders for the 8mm. What's the big differences in those powders other than burn rates? I'll use the K98k for taking out an occasional Texas hog and of course plinking.
     
  2. Kachok

    Kachok Member

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    If yours is the .323 cal JS (most are) Nosler has some good data, some of which will shock you how potent the 8x57 can be. The 8x57 likes many of the same powders the 30-06 likes IMR 4350, Varget, RL15 and IMR 4064
     
  3. ssyoumans

    ssyoumans Member

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    Yeah, those loads are mild, S&B loads full power 8mm JS ammo.

    The Remington 170gr at 2204fps is only 1804 ft-lbs. This is 30-30 class power.

    I reload the Sierra 175gr at 51gr W748 for 2610 fps, 2648 ft-lbs and that is still 2gr under max per Hodgdon.

    I also reload Hornady 150gr with 54.0gr W748 for 2824 fps, 2656 ft-lbs, again, 2 gr under Hodgdon max.

    Both loads used CCI LR Magnum primers and had extreme spreads under 26 fps, and we're quite accurate (groups), but HiGH out of my K98. These loads put the rifle closer towards 308/30-06 territory while not putting too much stress on an older rifle.

    Verify all data and work up to safe loads in your rifle. I started around 4-5 gr under max and worked up to these.
     
  4. Kachok

    Kachok Member

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    Modern action 8x57s can push a 200gr bullet to nearly 2700fps, that is some pretty serious thump, but I honesly do not know if those are safe in a 98 action, I would do my homework on that first.
     
  5. gpurp

    gpurp Member

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    200gr bullets at 2700fps is definitely 30.06 territory. But honestly there's no need for me to run the K98 quite that hard. I'd be happy with a mid level load if I could get 2 moa out of this gun. Unless I run in to Hogzilla I'm ok with 2400 - 2500fps.
     
  6. WYOMan

    WYOMan Member

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    Are you sure the PRVI wasn't running 2496? When your rifle was doing it's duty it was shooting a 198 grain bullet at between 2475 and 2500 fps. My loads that run 2503 fps from my rifle would probably get up around 2600 to 2700 in a Remington 700. Mauser throats in military rifles were 3 calibers in length.
     
  7. gpurp

    gpurp Member

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    I double checked my notes and the fastest PRVI recorded was 2225 fps. Not sure if it matters but these were soft points, not FMJs. I had the chrony set up about 6' from the muzzle.
     
  8. Sgt. Stiglitz

    Sgt. Stiglitz Member

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    Factory 8 MM Chrono Data

    Took along my 8 MM Mauser Preduzece 44 model 98. Had a Timney trigger installed in the Mauser last week, to the range yesterday...........Here is what it will do with some 8 MM Mauser 100 yds. 198 Gr Egyptian FMJ.........I have around 2000 rounds of this stuff along with some German WW II Steel core.......Scope is a thick Post 4X, B NICKEL SUPRA MARBURGL Supra-4x36 LS1 ES Made in Germany. Got it from my Uncle who was overseas in WWII. In 1957 he got the rifle a Winchester .270 at the 86th Fighter Interceptor Wing while in Eroupe there. I have the Firearms Retention Authorization papers from it. I put the B NICKEL SUPRA MARBURGL Supra on the mauser and an old Weaver K-10 onto the .270. Seemed fitting......Uncle is still kicking at 91, thanks Uncle, for the Scope and Winchester .270 and your services!


    100_4155.jpg
    86thfighterinterceptorwingGermany-1.jpg

    8 MM Mauser 100 yds. 198 Gr Egyptian FMJ
    8MMMauser100yds198GrEgyptianFMJ3.jpg

    8MMMauserPreduzece44model982.jpg

    8MMMauserPreduzece44model985.jpg
    8 MM Mauser 50 yds sight in 198 Gr Egyptian FMJ
    8MMMauser50yds198GrEgyptianFMJ.jpg

    BNICKELSUPRAMARBURGLSupra-4x36LS1ESMadeinGermany9.jpg
    Just clean it real good afterwards, this stuff is corrosive.......Windex or any ammonia base cleaning product will wash the salts away, then I clean it like any other firearm......
    8 MM Mauser Preduzece 44 model 98
    198 Gr FMJ
    2631 fps
    2627
    2625
    2631
    2525
    2627
    2635
    2644
    2635
    2640
    Energy (foot pounds): 1942
     
    Last edited: Jun 23, 2012
  9. ssyoumans

    ssyoumans Member

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    Prvi downloads their 8mm Mauser ammo just like American companies. I chrono'd their 196gr SP @ 2088fps, 1883 ft-lbs, whereas Yugo 196gr military surplus measured 2400 fps, 2550 ft-lbs.
    S&B is full spec with a 196gr SP at 2486 fps, 2690 ft-lbs.
    Any of it is plenty for hunting, and the Prvi was nice brass for reloading.
    Cheers!
     
  10. gpurp

    gpurp Member

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    No direct experience with S&B 8mm but I run across more that one post saying that PRVI is much better for reloading.
     
  11. gpurp

    gpurp Member

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    Good looking Mauser you got there Sgt. I see an AR there on the table. Those are cool but not quite the same charm as the old war horses.
     
  12. snakeman

    snakeman Member

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    I used h4895 and hornady 150 gr soft points for an accurate, modest, 2800 fps. It seemed safe and performed well on deer. Just thought I'd throw that out there.
     
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