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7x57 load data

Discussion in 'Handloading and Reloading' started by JLCook, Feb 7, 2010.

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  1. JLCook

    JLCook Member

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    Anybody load for the 7x57 mauser? I am looking at working up a load for my vz-24 with 175 grain Hornday round nose bullets. Maybe 45-50 grains of RL-22. I also may look at loading a 139- 150 grain ballistic tip or sst. I would want to use the same powder for both. Maybe RL-19 for both or will RL-22 do both. Or are there much better powder choices (IMR, Hogdon, Alliant, Ramshot, ect..) The purpose for the loads would be for wild pig ( if i ever get to it) alternate purpose would be just slinging lead just for the pure fun of it. Any thoughts?
     
  2. gdcpony

    gdcpony Member

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    I loved loading for mine. It was the biggest round I could practice with all day, and still have a smile afterward. I have no experience with the powders you list though.

    For a basic 7x57 load I would start with IMR4350. For that matter, all my 7x57 loads ended up using this powder. I doubt anyone will doubt this cartridge's liking for this powder. Most of mine were compressed loads and shot sub MOA all day long. I gave up a little of the speed I could have had with the lighter bullets, but never noticed.

    For 'yotes I loaded 100gr pills ahead of it, and for elk I loaded 175gr in front of the same. Any of them would work fine on hogs I would think. I would favor the 150's for that kind of work. They flew the best for me according to the logs. The 1913's from Sierra would be your best bet. They are proven performers and I have no record of another hunting bullet edging them out accuracy wise. Bear in mind these are my records. Someone else may have other things to say.

    I would post up my loads exactly, but they were hot, and NOT for a 95 action. Most of the data you will find is safe for those old guns as they are so common in this caliber. I know you would be good with them, but another reader may not. I would hunt down some "+P" loads if I were you.
     
  3. interlock

    interlock Member

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    i can give good loads using quickload, have you considered speers 130 or 145 gr spitzers? i use them in my 7mm08. they are tough deep penetraters and would be good on pigs.
     
  4. Kernel

    Kernel Member

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    IMO RL-22 is way, WAY, to slow for 175gr bullets in the 7x57. RL-19 or H450 would be a much better choice. For your 139-140 grainers I'd go with 4350 or N150, which would also work okay for the heavier bullets.

    You might appreciate this article that appeared in Handloader issue #255, 7x57mm Mauser The “First” 7mm by John Haviland. His rifle really liked IMR-4831 with 175 gr bullets, and 4350, in general, for everything - light to heavy.

    http://riflemagazine.com/magazine/PDF/hl255partial.pdf

    The vz-24 is based on the Mauser '98 action, so you should be able to use any load published for a modern bolt action.
     
    Last edited: Feb 8, 2010
  5. Mr_Pale_Horse

    Mr_Pale_Horse Member

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    I have used IMR 4895, IMR 4350 and WIN 760 behind that bullet, in an Interarms Mark X.

    I settled on 760, since it grouped a tad bit better (owing to its extremely consistent metering?), but in reality, it was probably a little too slow. I know it really made a huge muzzle flash. I was loading 46.2 grains of 760 in R&P cases, seated to crimp in the cannelure.
     
  6. rcmodel

    rcmodel Member in memoriam

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    RL-22 will work with a 175 grain bullet in the 7mm Mauser.

    In fact, according to the Alliant powder guide, it gives the highest velocity possible in thier powder line with 175 grain Speer SP bullets at 2,596 FPS.

    They list a 51.0 grain (compressed charge) maximum load.

    A 10% reduction starting load would be 46.0 grains.

    rc
     
  7. Zeke/PA

    Zeke/PA Member

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    I load 39 Grains of 4064 behind a 175 Gr. Remington Core-Lokt in the 7mm Mauser .
    I origionally found this load in Phil Sharpe's "Compltete Guide to Handloading" and the loading has served us well in the deer woods for quite some time.
     
  8. Maj Dad

    Maj Dad Member

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    4320 was the powder for the 7x57 back in Jack O'Conner's hey-day, and the one that did best in mine. It really shined in the 7x57 case, sort of ballistics serendipity. I branched out to 4064 and a couple others, but always went back to the original.
     
  9. Kernel

    Kernel Member

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    True. But that higher velocity comes at a price. It's a 3.5% velocity increase AND a 6% pressure increase, compared to RL-19. Higher velocity for higher pressure. It’s a trade off. That's why I don't see RL-22 as optimum. The velocity/pressure trade off isn't worth it.
     
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