30 cal 197gr GSC?

Discussion in 'Long Range Hunting & Shooting' started by durak, May 27, 2013.

  1. durak

    durak Well-Known Member

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    Anybody used this bullet?



    Bullet Number



    308197SP204

    0.308
    .308" Calibers

    197gr

    Speed
    Max fps
    m/sec
    fps
    3,400

    BC
    0.827







    This bullet is recommended for:


    Single Shot Feed

    STABILITY FACTOR AND TWIST RATE
    A Stability Factor greater than 1.2 is required. Any combination of twist rate and bullet length that does not give at least that, is not suitable. SP bullets are non-expanding spitser type bullets and are not recommended for hunting, unless you have a specific application. For use under 500m, a Stability Factor of 1.5 or even greater can be used. For distances beyond 500m the stability factor can be decreased, but must never be less than 1.2. Some experimentation will be required to determine the best combination for your particular atmospheric conditions.
    Choose a bullet length best suited to your rifle twist and type of shooting.
    Note that S/F increases as twist tightens. A 1:10" twist is tighter than a 1:12" twist.







    [​IMG]


    [​IMG]
     
  2. durak

    durak Well-Known Member

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  3. Clayne B

    Clayne B Well-Known Member

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    If you could get that bullet going 3400fps with the right twist, it would be impressive i bet gun)
     
  4. idaho elk hunter

    idaho elk hunter Well-Known Member

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    Very finicky bullet and tough to tune a rifle for. Very sub par BC for there hunting bullets. Barnes a much better choice for hunting. Very high BC for paper punchers but it will take a dedicated barrel and throat to get them to shoot well.
     
  5. durak

    durak Well-Known Member

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    Have you shot these?
     
  6. Gerard Schultz

    Gerard Schultz Official LRH Sponsor

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    Clayne B

    The 3400fps that durak gave in is op is the maximum launch speed of that particular bullet. It does not refer to any load data, only that the bullet should not be launched at more than the maximum speed specified.

    idaho elk hunter

    GSC bullets are designed to work in standard chambers. Nothing special is required except that the chamber should be on spec. If the chamber of the rifle is out of spec on the large side, getting accuracy with GSC bullets can be finicky. The upside is that, if a chamber is under spec, as some tight chambers are, GSC bullets are more forgiving of pressure and less hassle than standard bullets. The HV range is designed primarily for hunting under 500 but there are a few HV bullets that are designed as long range hunters and the BC numbers are good. It is always a good idea to shoot drop tables with the bullets you choose because some manufacturers give fictional numbers, some actually shoot and determine BC numbers and some give calculated BC numbers. With BC there is no standard to rely on.

    durak

    Contact Anthony at the USA website, he can put you in contact with shooters who have used this bullet.
     
  7. WildRose

    WildRose Well-Known Member

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    Why would you want to shoot a non expanding bullet that is specifically not recommended for hunting as a hunting round?

    Personally I prefer not watching wounded game run off over the next hill.
     
  8. MontanaRifleman

    MontanaRifleman Well-Known Member

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    The OP doesn't mention if he want's to hunt with them or not. If he does, GS will customize bullets to your spec and I'm sure could turn this bullet into the HV (expanding hunting bullet) version. This bullet requires a twist of 1:8.5 or tighter and less than 1:8 for hunting.



    I have very limited experience with GS bullets. I tried the HV 177's in my 300 RUM and could not get them to group less than 1 MOA. That particular chamber and rifle did not like them. Will be trying them again in my new 300 RUM with a Broughton 5C barrel in a couple of weeks.
     
  9. WildRose

    WildRose Well-Known Member

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    Call me crazy but this is the "Long Range Hunting" forum and the "Hunting Sub Forum".... .
     
  10. MontanaRifleman

    MontanaRifleman Well-Known Member

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    No, you're not crazy. You got the forums right. But that doesn't mean the OP is asking about hunting. Maybe he is and maybe he's not.

    Either way, instead of just saying, "I prefer not watching wounded game run off over the next hill" I explained to him and anyone else reading how to go about having it made into a "hunting" bullet and my experience with 177 version.
     
  11. WildRose

    WildRose Well-Known Member

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    How about instead you let him answer the questions posed to him and let me write my own posts?

    If your sole desire is to have an inane argument have it with yourself, I'm not interested.
     
  12. MontanaRifleman

    MontanaRifleman Well-Known Member

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    No offense intended. It is possible to have a discussion without having an "inane" argument and I don't think there was anything inane in what I posted. I have had an interest in GSC bullets for a while and am familiar with the different offerings and thought I could shed some light on the subject.