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Thread: 458 bullet, wild idea

  1. #1
    Member The Kid's Avatar
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    Default 458 bullet, wild idea

    So for the last year or so we've had HSM loading the 350gr Swift A-Frame in our 457mag ammo. The bullets are outstanding, accuracy reports indicate they shoot better than the Kodiaks we used to load for alot of guys, and terminal performance has been superb. Jim has one shot through a Muskox and one shot into a bison that he recovered both weighing around 345-349gr and opened to about .85. Another shot through a grizzly and came through in exellent shape although it lost a little weigh smashing through a bunch of vertebra.

    What I'm proposing is to buy some and load them up to 2500fps in my 458. I figure that even if the front half comes apart I'll still have basically a Nosler Partition. I really like 350gr bullets in the big fella, flattens trajectory somewhat and lessens recoil as well. My problem is that aside from the TSX there is no premium 350gr bullets redily available, I guess the Swift is about the same cost as the Barnes offering but it'll be a good excuse to reload and shoot more.

    Anyway, thoughts and ideas appreciated.

  2. #2
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    Not sure what you're asking for but the 458 Winnie is a fun round to load and shoot. I have found Alliant 12 to be tops for bullets from 400 to 500 grains. And the Speer semi-spitzer mag tip can be zipped to 2500 with that powder. Alliant RL-12 is defunct but I am thinking their 10x powder will work great also. It lies between RL-12 and RL-7. I was thinking of running some of that 10X through my 1962 vintage, claw extractor Browning Safari. I'll start with RL-7 data and a chrony.
    I will say for usefulness and butt kicking power the 400 grain A-frame has worked so well in the little 458 Winnie and it hits right at the magical 2400 fps velocity giving a full 5000 # of M E, if that matters. I have personally seen hippo and cape buffalo fall to that load. As well as lesser stuff like croc and leopard. I loaded it for a guy around Fairbanks to hunt heavy bear but don't know of results.
    Of interest to you, as I'm sure you know the 350 is made for the 45:70 level of ballistics. You will tax it's structural integrity at 2500 gps. They are flat nosed and cannelured for the 45:70 magazine tube also. I use the 350 mag tip for practice in the 458. It is do mild mannered I can shoot it well and I forget how the 458 can punch.
    Is there nothing so sacred on this earth that you aren't willing to kill or die for?



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    Member The Kid's Avatar
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    I've been using the 350 Magtip lately and it is an accurate bullet in my rifle. I am pushing it to an average velocity of 2490 from my 20in bbl, I'm just a little concerned about whether or not it will hold up. Speer claims it is made with the WinMag in mind but then again Hornady claims their 350rn is the ticket for that round as well. The Hornady is super accurate from my gun but finding the shucked jacket on the onside ribcage of the last critter I took with it is kindof offputting, confidence in ones rifle and load being of some importance. I'm just looking for a better 350gr bullet, and of course a reason to experiment with the big rifle over the winter.

    You are right in the 458 being a neat caliber to play arond with and shoot, as well as hunt with, just sorta slaps things down to earth. Besides all that my 458 is my most consistently accurate rifle, shoots most every bullet and powder combo as well as factory ammo into sub inch groups if I do my part. I've even loaded some of the Hornady FTX bullets in it, a varmint load if you'll believe that.

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    Moderator hunt_ak's Avatar
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    Murph! Where ya been?!! Glad to see ya around...

  5. #5
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    Thanks. I've been around. Which is better than not being around
    I'm trying to get in shape with a new exercise program....cutting brush, cutting logs and firewood, the splitting mall is fun.
    This 458 loading is also lots of fun. That 350 grain A-frame is a much stronger bullet that the Speer and the Speer is a good bullet. It is flatter shooting than the Swift or the Kodiak but at 150 yards nobody will notice. The Hornady is just for practice and load development. Above about 1800 impact velocity it is fragile.
    Is there nothing so sacred on this earth that you aren't willing to kill or die for?



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