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357 Mag recommended loads

Discussion in 'Handloading and Reloading' started by Wing Rider, Jan 4, 2019.

  1. Blue68f100

    Blue68f100 Member

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    ^^^^ Yes, the bullets need to be seated a little deeper. As you are now your on the bottom of the cannelure with no place for the brass to roll into. This can actually cause the brass to buckle, then they want load. I like to go deep as I can with the longest brass clearing the bullet when crimped.
     
  2. Wing Rider

    Wing Rider Member

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    I will work on that. Thanks
     
    1976B.L.Johns. likes this.
  3. Walkalong

    Walkalong Moderator Staff Member

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    180 Gr XTP in .44 Mag
    Medium Plus Roll Crimp On 180 Gr XTP In .44 Mag Pic 3.JPG
    Medium Plus Roll Crimp On 180 Gr XTP In .44 Mag Pic 2.JPG
     
  4. 10

    10 Member

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    14.5 grains of 2400 under a 158 XTP or hardcast is my go to .357 load. I worked it up to 14.9 grains of 2400 (in the GP100 only).14.4 of AA#9 is also a good one in that gun. The GP100 can handle tons of full power loads. I load 7.5 grains of Unique also in my GP100's and Blackhawk under a 158 but would hesitate doing that in a smaller frame Smith. I don't usually shoot mild loads in my Rugers. I don't get the velocity gains with H110/W296 to justify using it over 2400 or AA#9 in the 357 magnum. In bigger bore magnums and hot (Ruger only) 45 Colt the H110/W296 shines. If you run into some AA#9 I think you'll find it comparable to the 2400. It uses about a half grain less powder charge. I only raise charges by 2 tenths of a grain once I get to a warm load and want to increase it further, while measuring case heads for expansion, looking for flattened primers and loosened pockets, and monitoring the chrono.
     
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  5. IWAC

    IWAC Member

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    I have shot hundreds of my old IPSC load...357 brass, 5.5 gr. Unique, 150-158gr LSWC, std. primer, 4" barrel...860 fps chronoed. Accurate, little to no leading, pleasant to shoot in my Model 19, Dan Wesson, 586, and GP 100. ~ .38 spl +P...maybe a tad more. I have some AA#5 and Universal I'm experimenting with, and Trail Boss for DEWC loads, although loads for my exact bullet weights are thin on the ground. Brian Pearce, in his book on reloading, gave a very practical formula to go from .38 Spl. to 357 Magnum... Take a .38 load, and add 10%. Generally, less than 357 start loads, except in some cases, so check. Maybe start by adding 5%.
    Tried the "Skeeter Load"...13.5 gr. 2400, didn't like it very much, don't have any more 2400, may not buy again. Just my $.02. Ymmv.:)
     
    Last edited: Sep 19, 2019
    Slamfire likes this.
  6. styles

    styles Member

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    Low power, target .357 loads? Hp38 is so called for a reason.
    I prefer aa#2 for 38s, but hp 38 is very good and hs6 is a great compromise if you don’t want to use 38 brass. AA#7 is also something to check out.
     
  7. joneb

    joneb Member

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    For a 2 and 3/4" Ruger Sec. Six with 158 gr XTP 13.7gr of Acurrate # 9, or 14.2gr of 2400 works very well for me with a standard spp.
     
  8. Walkalong

    Walkalong Moderator Staff Member

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    Competition or WST under an X-Treme 158 gr SWC. Coated bullets or lead will work too. Lots of light recoiling fun for all.
     
    Blue68f100 and tightgroup tiger like this.
  9. brutus51

    brutus51 Member

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    Been loading .357's for a long long time. Most favorite bullseye load was always a Speer .146gr. half jacketed semi-wadcutter over 13.5gr. of 2400.
    Won a lot of beer's out of my Python with that load. Bullets been discontinued for some time now, I still have some left but just can't bring myself to shoot them.
    Now I load the 158gr. XTP's which are great bullets just not quite as accurate.:(
     
  10. tightgroup tiger

    tightgroup tiger Member

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    I still love those bullets! I like their plated double end wad cutters to.
     
  11. docbrown

    docbrown Member

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    For a full house load in my Security Six I load 15 grains of H110/296 with a Speer 158 grain SJHP. Have not chrono'd it, but no pressure signs and very accurate. It is a handful, however.
     
  12. bullseye308

    bullseye308 Member

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    I have fired thousands of 158 gr swc coated with Lee tumble lube over 5.0 grains of bullseye for years from a 6” gp-100 and nothing else. Very accurate and haven’t cleaned the bore in 3800 rounds.

    Anyone have any idea on the velocity?
     
  13. 2ndtimer

    2ndtimer Member

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    According to Alliant, your load should be around 950 fps, give or take.
     
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  14. bullseye308

    bullseye308 Member

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    Little slower than I thought, but plenty of fun for plinking. Thanks.
     
  15. Captcurt

    Captcurt Member

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    I am with Legionnaire on this, but would add H110 and AA#9 just to have something different. I've had some really good loads with both of them. My deer load for my GP is 180gr xtp over a near max load of H110. Haven't chrono'd it but the same bullet with AA#9 was 1200 fps out of my 6 inch.
     
  16. desmobob

    desmobob Member

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    I loaded some Star 125gr. JHPs over 19gr. of H110 and got nice accuracy from my S&W Model 66-2. I think I got this load from the Lyman Pistol and Revolver Handbook.

    Today, while browsing the forums, I saw several references to avoiding the use of reduced charges of H110. The Hodgdon reloading website lists a starting load of 21gr. of H110 with 125gr. JHPs and a max load of 22grs. Hmm... then it seems like my 19gr. charge sure qualifies as "reduced."

    When I saw the nice accuracy with this load, I had loaded up another couple of hundred. I hope I don't need to pull all these down!

    What do you think?
     
    Last edited: Oct 23, 2019
  17. 2ndtimer

    2ndtimer Member

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    I think you are fine. The Speer No. 14 manual shows a start charge of 18.0 gr of H-110 with their various 125 gr bullets. (and a maximum of just 20.0 gr, for what it is worth.). If I recall correctly, Winchester used to list a Max load of their 296 powder as 18.5 gr. with a caution not to reduce. That was like 40 years ago, so the burn rate might have changed since then.
    If you have been shooting your 19.0 gr load of H-110 with no issues, I would continue to use them. I myself have gone to heavier bullets, as the 125 gr high velocity loads are harder on the forcing cone of the barrels.
     
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  18. desmobob

    desmobob Member

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    After seeing the current Hodgdon data listing 21 and 22 grains of H110, I figured my 19 grain load was gentle and easy on my trusty old Model 66 with her "fragile" forcing cone and thin top strap... ;-)

    It's funny... I've become so accustomed to using the current on-line data from Hodgdon and Alliant, I forget to look at my reloading books. I should have thought to check the load with data from my little library in the reloading room.

    Thanks,
    Bob
     
  19. desmobob

    desmobob Member

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    I sent a question regarding this load to Hodgdon. According to their technical support staff, it is safe. (The latest Hornady manual shows starting loads at 17.4 grains.)
     
  20. RealGun

    RealGun Member

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    When I don't want the full effect of H110/296, I use IMR4227, which I find very user friendly and which allows some range in load weights. Next step down from that would be AA#7.
     
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  21. desmobob

    desmobob Member

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    Those are two powders that I don't have on hand. I have been wanting to pick up some IMR4227 though. I'll put it on my list. Thanks.
     
  22. RealGun

    RealGun Member

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    In general, if you try to go outside load data limits, you should be waiting to get the right powder (or bullet, or gun). Making do with what's on the shelf is okay as long as it fits the proven data.
     
  23. desmobob

    desmobob Member

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    Using a published load with H110 --one of the most popular .357 powders-- is hardly "making do with what's on the shelf." I also have Blue Dot, Unique, Longshot, Universal Clays, SR7625, and probably a few others that can be succesfully used.

    And I'm not trying to go outside load data limits. The load I questioned was a published load from a reputable reloading book. I was concerned when I saw conflicting information. You make it sound like I have a frivolous attitude toward reloading. I've been safely reloading for rifle, pistol and shotgun for over thirty years.

    Forgive me if I took your post the wrong way...
     
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  24. RealGun

    RealGun Member

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    You asked "what do you think?".
     
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