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.338 bullet question?

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  • 416forbuffalo
    replied
    The 338WM is a great cartridge and I've used it in Africa over 30 years.

    On bullets:
    Back in the day, the 250NoslerPart .338" was the go-to bullet, but the old Speer 275grain was another great choice. (Yes, they take buffalo, but this is not legal in many countries these days. Still it's good to know when walking a forest.) The 300 grain Barnes originals worked fine, too, but were a little slow.

    Fast forward to the 21st century- -

    These days I use a 225gn TTSX with its high BC of .514 for resisting any wind drift. It gets 2800-2850fps which means it's flat shooting out to 400 yards and a shot over 300 yards is pretty rare in Africa. Penetration is excellent. Monometal bullets tend to retain 100% of their weight so that they often penetrate about like bullets that are 10% heavier. In other words, a 225gn TTSX is the equivalent of a 250gnNP regarding penetration, but with a better BC and higher velocity.
    This one bullet, 225TTSX, does it all,
    although I also have a few Barnes flat-nose solids in 250gn .338".

    Leave a comment:


  • Beaverstate23
    replied
    That rifle is a beauty, Offhand.

    Leave a comment:


  • Offfhand
    replied
    Following up on earlier posts: this is the .338 WM I've taken to Africa several time and used for the game sown in photos. Built by David Miller on a Mauser action much customized by Miller and Miller scope mount it has not shifted zero for forty years.
    Last edited by Offfhand; 01-15-2018, 11:57.

    Leave a comment:


  • DesertMarine
    replied


    Beautiful rifle. Nothing like a beautiful accurate rifle.

    Leave a comment:


  • swampshooter
    replied


    Beautiful rifle, well done Phil. Tell us more about your new cartridge.

    Leave a comment:


  • Rockydog
    replied


    Nice looking cartridge. Beautiful stock on that rifle. What is the parent case? RD

    Leave a comment:


  • PhilLozano
    replied


    Went to the range -



    To shoot my newly designed cartridge and rifle







    Sorry this photo is out of focus, but this is what I got at 100 yards with the load listed.



    The way the rifle came together, with an experimental cartridge and load, . . . . . what did I think about the results ?




    Basic details :

    Cartridge name - 338 BOS

    Action - Whitworth (Commercial Mauser)

    Barrel - Bartlein - Stainless Steel - 1 in 10 twist

    Trigger - Timney - set @ 2.75 lbs.

    Stock - English Walnut - Classic Safari



    Initial R&D -
    First load . . . . first time out -

    Caliber - .338

    Bullet - 250 grain, Swift A-Frame

    Powder - Reloader 22 @ 77.0 grains -


    Velocity - 2,709 fps - @ 12 ft. from the muzzle

    Energy - 4,000+ ft. lbs.

    The above is posted in another section here.
    The cartridge is my own design (.338 BOS), and has proven to work quite well. Only taken a hundred critters or so with it, so, it has not been really comprehensively tested.

    Since that first post/report, I have changed the powder and am now pushing 250 grain Swift A-Frames at a chronographed 2917 fps, with no signs of pressure (89 degrees the day I shot).

    Basically, it's no better or worse than a 340 Weatherby. It does however, operate/work in a standard length action.

    And as you can see, the accuracy is pretty good for a hunting rifle. (that's 3 shots at 100)

    Warning !
    Anyone that attempts or uses this loading data in any rifle, pistol, shotgun, cannon or any other type of weapon, is out of their friggin mind !

    Leave a comment:


  • Offfhand
    replied


    A factor seldom mentioned in discussions of the .338 Win Mag is that is heir to similar cartridges that earned great reputations in Africa, Asia and other continents. By this I mean it is similar in bullet diameter, weight and performance to historically successful calibers. To better illustrate, attached is a photo of the .338 Mag between the legendary .318 Nitro Express and 9.3X62 Mauser. Case length of all is nearly the same, which is a big plus for all three as they fit the magazines and function in standard length bolt actions. A feature never to be overlooked in that it permitted their use in a wide choice of relatively inexpensive rifles that were bought and used by resident hunters mainly concerned in hunting for food as well as sport. Such hunters were seldom concerned with ballistics. But they knew from experience what worked, and worked well on about everything they hunted. Which is what the performance level of the .338 is heir to. Cartridge on right is .400/.360 Westley Richards Nitro Express. Shown here for comparison because despite being a handsome "medium bore" rimmed round, and offered in superb rifles, never achieved much popularity except for tiger hunting in India by rich nabobs and similar minded Englishmen in India and Africa. I handload this cartridge to about 2300fps with 285 grain bullets, but despite it's elegant bloodline it's still not quite the equal of the three classic medium bore cartridges shown.
    Attached Files

    Leave a comment:


  • PhilLozano
    replied


    Roan and Sable have incredibly thick skin for antelope. Much thicker than you would think.

    Roan is the second largest antelope in Africa ... second only to the Eland.

    Both Roan and Sable are pretty tough critters. They can take some lead.

    And I agree with what was said previously, under penetration is much more of a problem than over penetration.

    Also, something to consider when choosing a cartridge for Africa, ..... do you want to spend 4 hours hunting, or 4 hours following drops of blood.

    Hey, I am just a PH, ... makes no difference to me what cartridge you want to bring, or what bullet(s) either.

    I'm not the one paying the trophy fees. And just a heads up reminder, .... 1 drop of blood found after the shot, it's yours, it's going on the license, whether it's recovered or not.

    just my $.02

    Leave a comment:


  • Offfhand
    replied


    While on the subject of the .338 Win. Mag,, here is one of the roan antelope in my collection, taken with the .338 Mag and 250 grain Nosler Partitions. The .338 Mag with a heavy bullet is a top choice for the roan because, like it's cousin the sable, it is a tough, thick bodied animal requiring heavy, deep penetrating bullets to kill cleanly. I've seen roan travel some distance after being well hit with lighter, albeit faster calibers, including another one I took with 7mm Rem Mag. a few years back. That, and similar observations largely convinced me of the performance edge offered by the heavier bullet choices.
    Attached Files

    Leave a comment:


  • Beaverstate23
    replied


    BTW Offhand, incredible trophies.

    Leave a comment:


  • Beaverstate23
    replied


    I'm more afraid of bullet failure and under penetration vs "over penetration" (the only problem being a bullet that fails to open up/mushroom) which makes me a heavy for caliber guy. I've never hunted Africa (my dream hunt!), but I've hunted exclusively with my 338 win mag the last several seasons with 250 Nosler Accubonds with great results (elk and deer). I haven't yet taken a shot that has "challenged" the bullet (the most flesh I've sent a bullet through was a quartering shot on a smallish cow elk that entered back in rib cage and exited in the lower neck, also broke both shoulders on another cow elk with a complete exit of the bullet.) The longest tracking job I've had with that bullet has been maybe 20 yards and have yet to recover a bullet. Limited experience but happy with the results so far. Plus my rifle puts them under an inch at 100 yards with 69 grains of IMR 4831 so if I do my job they end up where they're suppposed to.

    Leave a comment:


  • PhilLozano
    replied


    Blood nice. Thanks for the photo.

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  • swampshooter
    replied


    Very nice Offhand. Nice house and sable.

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  • Offfhand
    replied


    Thank you Phil, here's a better picture of the sable.
    Attached Files

    Leave a comment:

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