375 Hornady GMX

Discussion in '.375 & Up' started by MerlinMc, Aug 4, 2017.

  1. MerlinMc

    MerlinMc AH Member

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    375 Hornady GMX used in a 375 H&H this morning on a Cape Buffalo. Bull was shot once through the lungs at about 90 to 100 yards. Traveled maybe 50 feet before collapsing. Dead by the time we walked up to the animal a few minutes later. Here is a photo of the recovered GMX. Buffalo weighed 740 kg (1,628 lbs).

    https://www.hornady.com/bullets/rifle/375-cal-375-250-gr-gmx#!/

    Hornady GMX Buffalo.jpg
     

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    Last edited by a moderator: Aug 4, 2017
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  2. Shootist43

    Shootist43 AH ENABLER GOLD SUPPORTER AH Legend

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    That is about as good as it gets when it comes to bullet performance. Your photo looks like it came out of a Hornady advertisement instead of a buffalo. I assume pictures and more photos are on the horizon. Congrats on all fronts. How about posting this to AH's Bullet Performance Data Base?
     
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  3. CAustin

    CAustin AH ENABLER BRONZE SUPPORTER AH Ambassador

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    Congrats on your buff
     

  4. Nosler guy

    Nosler guy AH Veteran

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    Like Shootist43 said - that's about as good as it gets / impressive
    Was this from a handload or factory stuff?
     

  5. MerlinMc

    MerlinMc AH Member

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    CAustin, thanks.

    Nosler guy, these were the factory loads as I ran out of time.

    Here is an image of the buffalo. Just over 42" outside spread.

    Buffalo.jpg
     
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  6. Dr Ray

    Dr Ray AH Legend

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    Nice mushroomed bullet. Looks like it did a perfect job.
     

  7. MerlinMc

    MerlinMc AH Member

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  8. matt85

    matt85 AH ENABLER AH Legend

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    this is a fine example of using lighter weight bullets when they are mono-metal (i dont think Hornady makes a heavier GMX for the 375).

    that is an excellent buffalo, well done!

    -matt
     

  9. MerlinMc

    MerlinMc AH Member

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    Thanks, Matt. I also used the bullet on a large Cape Eland and smaller antelope. The eland was over 1,600 lbs. Here is an image.
     

  10. MerlinMc

    MerlinMc AH Member

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    Here is the eland image. GMX worked excellently here are well.

    Eland Anon.jpg
     
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  11. sheephunterab

    sheephunterab AH Fanatic

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    A Hornady bullet killed an animal???????? This can't be true ;) Congrats on a great buff. We've taken several types of buffalo, lion and loads of plains and North American game with the GMX and have experienced similar results! We'll be taking them to Tanzania here in a few weeks as well. That's some great velocity out of an H&H. We are running 2860fps with handloads in a 24" barrel.
     

  12. James Cook

    James Cook AH Veteran

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    nice buffalo! great performance from the bullet. used the same ammunition on a hunt in 2016. great performance on pg animals. killed the gemsbok in avatar with the same ammo. shot it at 250+/- yds w/ Ruger #1. It ran about 10 yards up hill, staggered back down the hill, and fell over backwards so hard it drove its horns into the ground with its head pinned back. tracker and ph had to pull the horns up out of the ground and roll it over on its side. :)
     
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  13. colorado

    colorado AH Fanatic

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    Seems like the GMX is a winner! Nice animals too. Congrats!
     

  14. Ridgewalker

    Ridgewalker AH ENABLER LIFETIME BRONZE BENEFACTOR AH Legend

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    Excellent buff!
    What kind of penetration did you get?
     

  15. johnnyblues

    johnnyblues AH ENABLER AH Ambassador

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    Hornandys with that kind of performance..? Seems a step up from the horrible reports on their DGX. I wonder what the performance would be in the 375 Ruger.
     

  16. Fred Gunner

    Fred Gunner AH Enthusiast

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    I love the terminal performance I’ve found with recovered GMX in 375 Ruger. But I can’t get any consistent accuracy with either Hornady Superformance or extensive hand loads. 2.5 inch groups off the bench @ 100yds is the best I can get. Switched to Swift A-Frames and under 1 inch with every load. Love to use the GMX Any advice to improve the accuracy would be very welcome?
     
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  17. whitetail

    whitetail AH Veteran

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    I know that Hornady gets a bad rap on AH, but I must say, my .375 H&H CZ loves the DGX ammo. I get very tight groups at 100 and 200 yards. Not sure why others don't have the same results so would appreciate feedback.
     
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  18. PHOENIX PHIL

    PHOENIX PHIL AH ENABLER AH Ambassador

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    It's not about accuracy Doc. And it's not just on AH that the DGX gets a bad rap. Talk to me at DSC or Vegas in a few months.
     
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  19. PeteG

    PeteG AH Elite

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    Definitely does seem to be a step up in performance from their DGX. And a good thing there is a viable alternative to the DGX in th hornady lineup.
     
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  20. Ridgewalker

    Ridgewalker AH ENABLER LIFETIME BRONZE BENEFACTOR AH Legend

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    Not Hornady GMX, but with Barnes monolithics I have to adjust the COAL (cartridge over all length) to make mine shoot well. Once the best powder charge is determined using Barnes's COAL recommendation, I start changing the COAL by .010 first shortening it. To date my 375 H&H has been able to consistently get 5/16-5/8" groups using Barnes 235 TSX, 250 TTSX and 300 TSX. My 300 Win Mag 5/8" with Barnes 165 and 168 TTSX. And my 30-06 1/2-5/8" using Barnes 130, 150 and 168 TTSX.

    If you don't handload, I'd give the Barnes Vor-TX ammo a try. Granted it's more costly, but again with my guns everything is under 1" when I do my part. Hardly worth the difference to reload except I enjoy it and I shoot a lot.

    Good luck!
     
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