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Bit the bullet on 1000yrd Extreme Big Bore .30cal

Forums Big Bores & Arrow Shooters Big Bores & Arrow Shooters – Discussion Bit the bullet on 1000yrd Extreme Big Bore .30cal

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    ChrisG
    Participant
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    Well I have been looking at this rifle for a couple of months and decided to pull the trigger. Was 3 day's late on getting it with a sick bench rest stock, oh well. Still a sick gun and should be a lot of fun! Can't wait to see if it can perform as well as the previous owner has claimed?

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    JimNM
    Participant
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    What do you feed that beast?  Helium?

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    JamesD.
    Participant
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    What CS riser is on? Gen 1 through 4?

     

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    JamesD.
    Participant
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    We're dying to know if it performs as well as previous owner claims. 
    Since you worded it as a question, what exactly was claimed? 
     

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    ChrisG
    Participant
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    JimNM

    What do you feed that beast?  Helium?

    It's tethered and regulated to 4500 psi tank. Previous owner said he would get about 50 shots from 90cf tank before drop off.

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    ChrisG
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    JamesD.

    We're dying to know if it performs as well as previous owner claims. 
    Since you worded it as a question, what exactly was claimed? 
     

    Previous owner claims that a few months ago at Thunder Valley Precision Range at 1000 yards  he was able to hit a 42"x52" target half a dozen times. Also that it will hit 16" gong at 540 yards easily. So I'm eager to put these claims to the test!

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    Loren
    Participant
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    Nice!

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    jmrsyrs
    Participant
    Member

    nice!

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    steve123
    Participant
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    Keep us posted on this because I'm super curious how well it'll shoot! 

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    jiikuu
    Participant
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    Damn thats so sweet! 

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    AncientSword
    Participant
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    Get to test it out yet?

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    AncientSword
    Participant
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    Would also like to hear some numbers on it. What slug are you shooting out of it and what velocity? What is your barrel length and twist rate?

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    ChrisG
    Participant
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    AncientSword

    Get to test it out yet?

    It's on it's way. Hopefully by Thursday!

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    ChrisG
    Participant
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    AncientSword

    Would also like to hear some numbers on it. What slug are you shooting out of it and what velocity? What is your barrel length and twist rate?

    The rifle has a 30", 1 in 7" twist match grade stainless steel ,air gauged Shilen barrel.  The barrel has been custom chambered, fitted and muzzle crowned it also has custom large  barrel band machined.

    The Velocity is about 840 fps with a 173 gr. 30 caliber cast bullet. 

    Also has 2 other barrels:  A match grade  Shilen 1 in 10 inch twist and a TJ. Enterprise 1 in 14" twist barrel. 

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    AncientSword
    Participant
    Member

    Nice, lots of setup to play with there. Are you going to only shoot tethered? Hopefully that gun was tuned with a little bit of a curve so you don't have to have it maxed out or you are not going to get many shots off a tank. Unless you are going to use a booster …

    I have one as well, with a fast twist barrel at 1:8. My barrel is a lot shorter though. Will be interesting to see how it works out.

    A 1:7 twist is really fast for that bullet and speed combo. I would think you needed to shoot around 200 grains for that. But sometimes these things surprise us and work anyway.

    Let me know if you want to sell one of your slower twist barrels, I might be interested.

    You are talking .308 when you say .30 cal, correct?

    I have shot from 155 grain up to 200 grain with varying results. I also have shot helium. I really think you need helium for that gun to shine with that fast of a twist.

     

     

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    AncientSword
    Participant
    Member

    I did a search and I found what gun you bought. Nice journey the guy had taking it to 1000 yards. He did indeed say he had about 6 hits out of 25 shots at 1000 yards.  

    That is pretty impressive. 

    He said he had it tethered and regulated to 3600 PSI. I found that there was some valve lock on mine if I took it above 4300 psi.  

    306 MOA to get to 1000 for him.  You will have a blast (pun intended) with this gun, but it won't be as plug and play as a PB for sure.

    Look forward to following your journey.

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    ChrisG
    Participant
    Member

    Well the gun made it:) Gonna gave to name this thing "DA BEAST"!!!! This thing is Crazy Heavy! 17lbs 2.2oz with cold shot and scope. The Shillen Barrel that's on it is No joke. Now I just have to buy materials for casting and get busy.

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    Gunnertrones
    Participant
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    Oh man – that is what I call a HIGH rig!

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    Steelhead707
    Participant
    Member

    Not sure if you can shoot a lighter bullet or not effectively. I bought just about every kind of bullet/mold applicable to my .308 Texan and the best overall is a little 115 gr. from Accurate Molds. A close second is the NOE 150 gr. boat tail. Granted, the gun and barrel are both different, but don't be afraid to 'go low'. For $#its and giggles you could buy a box from a supplier to see if they even like your gun. As a previous poster said, sometimes things 'just work' despite what the engineers and experts say from their desktop shooting sessions. That big bullet just seems really heavy and the speed a bit slow, but obviously the previous owner new what he was doing. Just for reference, I'm getting about 920 fps with a 115 gr. from my stock-internals Texan. 

    Beautiful gun. Good luck and happy shooting.

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