611 yd 34" NM Oryx

Discussion in 'Trophy Photos' started by Autorotate, Jul 26, 2009.

  1. Autorotate

    Autorotate Well-Known Member

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    Thought I’d share the results of yesterday’s festivities with our forum members.

    I was successful in drawing a NM Oryx depredation hunt that is held on Fort Bliss/WSMR. This was my first hunt that I attempted to make a dedicated effort to be able to take a “long range” shot and feel confident/ethical in doing so.

    These Oryx are tough critters in my book. I’ve seen even with well placed shots, that these animals are still able to motivate quite a ways. I haven’t heard of many DRT types shots on these.

    The final kill shot was at 611 yds. Aspect was quartering towards at approx 45 degrees. You might be able to make out the entrance hole from the picture below. More forward and a bit low than I would’ve liked. He measured up at 34” and 34.5”. Not the biggest for sure, but bigger than my previous 30.5” incher. Progress is what counts…right?

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    Shooting position was on top of the concrete bunker were you see the two orange hunters. The Oryx’s location as to the right of the truck.

    [​IMG]


    What was left of the 210 VLD as it was recovered in the heart of the animal.

    [​IMG]


    Score High Gunsmithing built the rifle. It’s chambered in a variant of the 300 RUMBO in that it was chambered so the neck/shoulder junction is still the SAAMI dimension, with a .003-.006 “crush fit” on virgin factory 300 RUM brass…enabling the firing of factory brass ammo in the gun. After firing, the case has. 005 of taper per inch, and a 40 degree shoulder. The reamer was originally throated for 200 NABs, but the sweet spot found during load development has a COAL of approx 3.900 with the 210 Berger. It started out as a Sendero rebarrel, and through many contortions and evolutions that Charely guided and tolerated me through, it came out as specified below-

    Action-Stainless Sendero 300 RUM
    Stock-McMillan HTG adj/cheek
    Barrel-Shilen Match Select Standard Varmint Countour 1:10 twist 29.5” finish (8 flutes 22” long)
    Trigger-Timney
    Wyatt CFE-9 mag box
    EGW 20 MOA base
    EGW rings
    Holland Radial Brake
    Lightweight firing pin
    Heavy weight firing pin spring
    Leupold Mark 6.5x20x50 TMR
    Harris 9-13 Swivel bipod
    Pod loc

    14.5 lbs with as spec’d above with 2 in the mag and one in the pipe.

    [​IMG]

    [​IMG]

    The load I settled on:

    F215GM
    92 grains H-1000
    3.897 COAL
    210 Berger VLD
    3205 fps

    This load ends up giving about 4-5 firings on the brass before the primer pockets give up. The virgin brass holds about 112.2 to 112.8 (5 case average) grains of water with a fired primer seated backwards. After firing, the case holds approx 118.8-119.1 (5 case average) grains of water. I’m sure my measuring methods aren’t of the scientific lab variety, but that should be enough to get you an idea. I don’t know that it makes much sense to improve the 300 RUM…but it was done just to do it. I figured it would be a good opportunity to learn the process of off a dummy round to a reamer mfg, custom dies, learn about wildcatting, steep shoulder angles/feeding, etc…it was a project to learn. Here’s a pic of the 300 RUM improved next to SAAMI spec case…hard to see the “improvement” but it’s there.


    [​IMG]

    In summary…still lots to learn, but LRH is a rewarding challenge that makes the learning worth it. Thanks for letting me share.
     
  2. 7STDUBBERU

    7STDUBBERU Well-Known Member

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    Nice write up. Oryx are on my "to hunt" list. Very nice rig also.
     

  3. bwaites

    bwaites Well-Known Member

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    GREAT looking animal!

    So what is "big" when it comes to these animals?

    Bill
     
  4. kiwi3006

    kiwi3006 Well-Known Member

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    Nice hunt! Thanks for all the info on the rifle.

    Stu.
     
  5. J E Custom

    J E Custom Well-Known Member

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    That is a nice one and a good shot !!!!!!

    Also a very good writeup and photos.

    J E CUSTOM
     
  6. Autorotate

    Autorotate Well-Known Member

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    Thank you for the compliments thusfar. Many a PM/email/phone calls to folks on LRH have been involved in the quest of the rifle build, load development, and LRH techniques.

    Bill...I think most would think once you get north of 37-38" on these you've gotten a real nice oryx....i.e. 300"+ bull, 150"+ whitetail. Of course there are 40" Oryx, and 370"+ elk, and 180"+ deer....but I'm not in that club. Yet:)
     
  7. bwaites

    bwaites Well-Known Member

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    Wow! That's a beautiful animal and a great shot, a longer horn would be incredible!

    Bill
     
  8. LewisH

    LewisH Well-Known Member

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    Good shooting. They are beautiful antelope, and they taste pretty good too.

    I harvested two on a depredation (cull) hunt in So. Africa in 2007 using a .270 Win. and Nosler 150gr Partitions, but not at 611yrds...more like 211 yrds.

    In So. Africa they are called "gemsbok," and you're right, they are tough animals.
     
  9. HUAINAMACHERO

    HUAINAMACHERO Well-Known Member

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    Nice rifle, nice buck, sure will do a nice mount.
    Also in the list of the animals to hunt:D
    Congratulations.
    Thanks for sharing!!!
     
  10. Slopeshunter

    Slopeshunter Well-Known Member

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    Congrats on the oryx! Great write up to, thanks for the details on the rifle too.
     
  11. trebark

    trebark Well-Known Member

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    You've got so many of these things running around that there's a special hunt?

    Nice shootin', nice rig.
     
  12. gamedog

    gamedog Well-Known Member

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    Congrats on the great Trophy!
     
  13. Capt Academy

    Capt Academy Well-Known Member

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    Great write up and pics! That's one of the longest shots taken on an oryx that I"ve heard of. Maybe I missed it, but did he drop in his tracks.

    My first oryx was also a 34" bull. Since than I've been lucky enough to draw and take a few larger ones in the 37-39.5 range.

    Your rifle came out very nice, as Charlie from Scorehigh does a great job on building them. The two of you working together came out with a very nice long range rifle! How does it shot off the bench?
     
  14. Autorotate

    Autorotate Well-Known Member

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    CA

    Thank you for the compliments, and congrats to you on the 35 and 37 inchers. The biggest I've seen in the field after the shot was a 38"...he seemed magnificent.

    He did not drop in his tracks. After the round impacted, he gave a hunch, and then whirled in a circle for one or two revolutions, and then took off on a run for about 150 yds. Stopped, bedded for about 5 mins. Then got up, walked another 15 yds, and then bedded out of sight. Gave him 15 minutes, walked up to him and found 'em.

    My best group to date has been a couple of 3 shot groups that came in under 1.75" center to center at 300 yds. After 3 of those groups (9 shots) load development was over for me:)...and have since focused shooting at greater distances, and learning the wind for longer shots. I'm certain the rifle would shoot much better with a different shooter and handloader.