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.338 Win Mag 250 or 300 SMK

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  #1  
Unread 01-01-2010, 09:10 AM
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.338 Win Mag 250 or 300 SMK

Can the .338 Win Mag push the 300gr SMK fast enough to offer an advantage over the 250gr SMK?

If loaded to greater than standard COAL, about what velocity could I expect to achieve with the 300gr SMK from a .338 Win Mag?

I am also looking to experiment with the Lapua Scenar bullets in both 250gr and 300gr. Has anyone tried these? How do they perform relative to the Sierra offerings?

The prospect of a new .338 Berger VLD has my interest as well. Hmmmm...
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  •   #2  
    Unread 01-01-2010, 09:48 AM
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    Re: .338 Win Mag 250 or 300 SMK

    Load them as long as you want, you'll be lucky to push the 250 gr faster than 2600 fps out of a factory length barrel. Do your calculations from there for the 300 gr.

    Simply put, the .338 Win Mag is better suited with bullets less than 250 grain.

    Last edited by Joel Russo; 01-01-2010 at 12:47 PM.
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      #3  
    Unread 01-01-2010, 11:15 AM
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    Re: .338 Win Mag 250 or 300 SMK

    I have a338-378 wby,have you or anybody else ever shot an elk with the 300 smk? If so,how did they perform, or,would you even use these bullets for hunting elk?
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      #4  
    Unread 01-01-2010, 12:50 PM
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    Re: .338 Win Mag 250 or 300 SMK

    Quote:
    Originally Posted by WAhunter View Post
    I have a338-378 wby,have you or anybody else ever shot an elk with the 300 smk? If so,how did they perform, or,would you even use these bullets for hunting elk?
    Sir:

    This thread is about the 250 and 300 gr SMK and the .338 Win Mag.

    Either start another thread or do a search about the 300 SMK's performance on game. There's plenty to read.
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      #5  
    Unread 01-01-2010, 01:19 PM
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    Re: .338 Win Mag 250 or 300 SMK

    In my opinion the 338 win mag is best suited with the lighter bullets such as the 225 Nosler AB which has about the best BC in the 200-225 grain bullet range. It will shoot the heavy bullets accurately but within the optimum effective range of the 338 win mag I think you are best with the faster lighter bullets.

    The 300 grain SMK will kill stuff just fine out of your 338-378 wby at any range you can hit it.
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      #6  
    Unread 01-01-2010, 01:46 PM
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    Re: .338 Win Mag 250 or 300 SMK

    Stick to the lower weight---250 SMK is too much for the little guy. One reason I use several 338 Lapua "improved" rifles.
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      #7  
    Unread 01-02-2010, 12:44 AM
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    Re: .338 Win Mag 250 or 300 SMK

    Then there are the guys who sing the praises of the .338 Whisper....

    When you are launching a .800 Ballistic Coefficient bullet does the velocity really matter all that much?
    When a 300gr bullet with thick target jacketing impacts living tissue at anything near 1000 fps, the blow is almost sure to be a mortal one.

    Question is, do you have the twist rate to stabilize the 300gr bullet? If so, go for it. Otherwise, why not shoot a .30-06 with 200gr matchking and get the superior performance of a higher BC bullet?
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