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243 Super Rock Chucker

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  #1  
Unread 11-17-2009, 09:13 PM
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Join Date: Nov 2009
Location: Wyoming
Posts: 155
243 Super Rock Chucker

I did a bit of trading this summer and ended up with this "little" 15 pound guy. The rifle is built on a Interarms Mark X action, with a 30" Stainless steel Hart barrel 1:10 twist that measures 1" at the muzzle, the stock is a Fajen Bench Rest laminate, EGW 0 MOA mount, with a Leupold 6-18x VXII scope, sitting in Millet rings. I added the scope mount and Leupold, when I got it there was a Weaver 20x on it in dovetail rings that I didnt like.

The 243 SRC is a 25-06 necked down and blown out, I get 4300fps with 58gr V-Max, 3850fps with 70gr SMK's and Nosler Ballistic tips, and 3750 with 75gr Hornady HP's. Since I have a 25-06 Remington and didnt want to mix things up and wind up with the wrong box of ammo at the range or hunting, I make my brass out of 270 Winchester brass, I neck it down with a false shoulder, trim to length and fire it with full power loads. Once I have it formed I only neck size. The problem I am running into is I only get 3-4 firings per case before the primer pockets get to loose for my liking, which is fine once fired 270 brass is cheap enough.

I mainly use H4831SC in it, thats what I have gotten the best results with, H4350 worked but 4831 grouped tighter with less velocity spread. Takes 56.5gr with 75gr bullets and 57.0gr with 70gr. Its a flat shooting rifle, only take 4.5-4.75 MOA with the 70gr bullets to be zeroed at 500 yards.

243 SRC on the Left 25-06 on the Right


Its a great rifle to shoot from the bench but packing it around isnt the most fun I have ever had but is dueable. My girlfriend shoots it pretty well, its a 1/4MOA gun with me running the trigger and she get right around 4" at 500 yards with it. If she can see it she can put a round on it out to 500 yards, if I dial the scope, (she hasnt shot further or learned MOA's)


Only thing I dont like about it, it wont shoot anything over 75grs with any type of accuracy. I really wish I could shot 90-107gr out of for a bit more punch at extended ranges but what can you do. If I ever deceide to build another one it will be with a 1:8 twist for heavy bullets.

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  •   #2  
    Unread 11-17-2009, 09:21 PM
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    Join Date: Nov 2009
    Location: Wyoming
    Posts: 155
    Re: 243 Super Rock Chucker

    Couple of videos. You can hear the bullet smackin the steel at 500 yards, seems like it takes a while but watching through the scope you can see the bullet blow up before the muzzle blast is done. The second video is a water jug at 100 yards, shooting a 70gr Nosler Ballistic tip at 3850fps.



    http://s48.photobucket.com/albums/f2...etmolds015.flv



    http://s48.photobucket.com/albums/f2...etmolds023.flv
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      #3  
    Unread 11-17-2009, 11:21 PM
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    Join Date: Nov 2007
    Location: Kookifornia
    Posts: 730
    Re: 243 Super Rock Chucker

    Why the 100's going so slow?
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      #4  
    Unread 11-17-2009, 11:36 PM
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    Location: Wyoming
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    Re: 243 Super Rock Chucker

    100gr's are fired out of my 25-06....didnt see any reason to push them faster when they do this
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      #5  
    Unread 11-17-2009, 11:45 PM
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    Join Date: Nov 2007
    Location: Kookifornia
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    Re: 243 Super Rock Chucker

    Oh I was thinking they were out of the .243 SRC...
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      #6  
    Unread 11-17-2009, 11:54 PM
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    Join Date: Oct 2008
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    Re: 243 Super Rock Chucker

    Enjoyed the videos, and pictures. Nice looking rig you have there.
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      #7  
    Unread 11-18-2009, 12:04 AM
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    Join Date: May 2008
    Location: South of Canada and North of Wyoming
    Posts: 6,068
    Re: 243 Super Rock Chucker

    Cool video and pics... go find some coyotes
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