8x57 JS loads

Discussion in 'Reloading' started by 8x57JS, Jan 14, 2008.

  1. 8x57JS

    8x57JS Member

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    Jan 14, 2008
    I am looking for some 8x57 loads using heavy bullets such as the 185 Remington Core-Lokt's. Loads using the 200 grainers are going to be used. Thanks,John :)
     
  2. keithcatfish

    keithcatfish Active Member

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    Sep 26, 2006
    I PM'ed you.
     

  3. Steve Shelp

    Steve Shelp Well-Known Member

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    May 3, 2001
    8x57JS,
    I have reloaded for my neighbor using the 185gr Rem Core-Lokts in htis caliber. I had never loaded for the case before so I used the accuracy/hunting load recommendation out of the latest Sierra loading manuals. They recommended IMR4064 powder so that is where I started. I never had to try another powder because it shot so good.

    Work up your load using standard loading/pressure practices but here is the compenents we ended up using for very good accuracy:

    IMR4064 (about 2 grs under max)
    Win LR primers
    Remington Cases
    185gr Rem C-L bullets
    FL resized
    Seating depth was into the lands approx .005" so the bullet wouldn't stick in the lands when pulled back out of the chamber. Be careful with this. With the more blunt nose on the Core-Lokt bullets it doesn't take much to have them stick.

    FYI: The recommended accuracy/hunting loads in the Sierra manuals are usually a really good place to start. I've seen them work in more than 1 more caliber and bullet weight.

    Steve
     
  4. RT2506

    RT2506 Well-Known Member

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    Jan 10, 2008
    One thing to be aware of with that 185 Remington 8mm bullet is that it was made for 8mm Rem. Mag velocities and it will not open up very much at 8mm Mauser velocities. It is fine for punching paper but for use on game I would go with the 180 Nosler ballistic tips or 175 Sierra or for deer size game the 150's from Sierra or Hornady or Speer are the ticket. IMR 4064 and Varget are too very good powders with this caliber. I second the statement about the Sierra accuracy loads.
     
  5. 8x57JS

    8x57JS Member

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    Jan 14, 2008
    Thanks for the replies gents,I shall try the Sierra listings.:cool:
     
  6. 8x57JS

    8x57JS Member

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    I just got off the phone with Mark Johnson at Remington, he says the 185 Rem Core-Lokt bullets will open up as low as 2000 fps. The factory 8x57 loads of 150 Core-Lokt's are runing 2350 fps,he said even these loads are opening up at 200 yards. I told him I'm getting 2582 fps with the 185's and he said I can drop game at 300 yds and still have them mushroom at that distance. Good stuff to know........