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Thread: 458x2" american

  1. #1
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    Default 458x2" american

    I just picked up a 458x2" American and am going to start loading for it. There really isnt' a lot of data out there for the 458 american but becaue it is basically identical to the 450 marlin I think I can use 450 starter loads for it. I have emailed hornady, hodgdon, and Barnes to see what they think about that. My target performance is 300grs @ 2200fps, 350gr @ 2100, and 405gr @ 1900fps. I think these should be pretty easy to achieve.

    I found brass was incredably easy to make for it, just cut down any belted magnum brass to 2" and resize it. I was able to make 50 lat night in a little over a half hour using some 300 win mag brass I have laying around. Here is one I just made next to a loaded round.



    Here is a dummy I made up using a Barnes 300gr TTSX. It looks to be a really sweet little bullet that should work really well. Other bullets of consideration are the speer 350gr hot core, hornady 350gr fp, 405 remington and 405gr Kodiak bonded.



    Any experience and especially data on the 458x2" would be great.

  2. #2

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    Quote Originally Posted by Thebear_78 View Post
    I just picked up a 458x2" American and am going to start loading for it. There really isnt' a lot of data out there for the 458 american but becaue it is basically identical to the 450 marlin I think I can use 450 starter loads for it. I have emailed hornady, hodgdon, and Barnes to see what they think about that. My target performance is 300grs @ 2200fps, 350gr @ 2100, and 405gr @ 1900fps. I think these should be pretty easy to achieve.

    I found brass was incredably easy to make for it, just cut down any belted magnum brass to 2" and resize it. I was able to make 50 lat night in a little over a half hour using some 300 win mag brass I have laying around. Here is one I just made next to a loaded round.



    Here is a dummy I made up using a Barnes 300gr TTSX. It looks to be a really sweet little bullet that should work really well. Other bullets of consideration are the speer 350gr hot core, hornady 350gr fp, 405 remington and 405gr Kodiak bonded.



    Any experience and especially data on the 458x2" would be great.
    I don't have time to go digging in my library at the moment for citations, but there was quite a bit written about it back in the 60's and early 70's. I'm reaching here, but if my fuzzy old brain is firing on all cylinders, Ken Waters even did an extensive piece on it in his Pet Loads series.

    I checked Donnelly and he cites an article by Fed Barnes in the 4th edition of Cartridges of the World (1962), so maybe that's one I'm remembering instead of Waters. BTW- The load he cites from Barnes is 40 grains of 4198 under a 350 grain jacketed FN for 1825fps.

  3. #3
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    Default 458x2

    Cartridges of the world, revised third edition by Frank Barnes

    250 gr gas check 31/4198 mv 1828

    300 Barns SP 55/4198 2412

    350 Hornady SP 52/4198 2260

    405 Winchester factory bullet 59/4895 1949

    405 " " " 49/4198 2067

    24 inch barrel winchester cases

    465 lead gas check 50/3031 1800 also a 24 inch barrel. This is the load I played with for awhile. I did shoot it through a 458 winne, not a two inch so I had a lot of free bore. You might want to try this load as it was real mild in my rifle, but start lower as I said this was in a 458 win chamber. Mixed brad cases.


    Hope this helps some.

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    Default found these by accident

    458x2" (458x2" American) Reloading Data Bullet (grs.) Powder / (grs.) MV ME Source Cast Bullet Load Data 210 IMR 4198 / 23.0 1285 778 Lyman #457127 250 IMR 4198 / 28.0 1828 1860 Lyman #454485GC 300 IMR 4198 / 25.0 1370 1257 Lyman #454485GC 405 IMR 3031 / 45.0 1535 2120 Lyman #457491 Above cast loads are all economical, accurate and pleasant to shoot. All but the 210 grain bullet are adequate for deer out to 150 yards. Jacketed Bullet Load Data 300 IMR 4198 / 36.0 1650 1820 Hornady SJ rifle bullet 300 IMR 4198 / 40.0 1825 2223 N/A 300 IMR 4198 / 55.0 2412 3900 Fred Barnes SP 300 Hi Vel / 58.0 1984 2635 N/A 350 IMR 4198 / 51.0 2209 3810 Hornady SP 350 Hi Vel / 56.0 2034 3240 N/A 405 IMR 4198 / 51.0 2110 4005 Winchester SP 405 Hi Vel / 56.0 1949 3422 N/A Jacketed bullet loads are intended for big game. All loads tested from a 24 inch barrel, average temperature 78 F, 458 Winchester Magnum cases and Federal #215 primers.

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    Default

    thanks for the info. Hopefully I will get a chance to do some loading this week.

  6. #6
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    What platform is this gun on? I have a friend that has one on a model 70 action. He really likes it.

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    Its on a remington 600 action

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