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338/300 Win Mag

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  #1  
Unread 12-06-2008, 04:19 AM
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338/300 Win Mag

Anyone had any experience with a 338 calibre rifle based on the 300 Winchester Magnum?

I have a Sako .338WM and it seems like I should be able to simply run a 300WM reamer into it to obtain some extra horse power.

I get 2427 fps with a 300grn Sierra Matchking out of my Sako .338WM, so I think I should be able to get 2550 to 2600fps with the larger 300WM case?

Any ideas?
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  •   #2  
    Unread 12-06-2008, 09:43 AM
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    Re: 338/300 Win Mag

    Hi.

    Dont know about passing the reamer in a 338 but wy???
    The 338wm is already more stronger than the 300wm.
    Y sudgest a lighter bullet more like 225gr for this rifle.
    If you whant more horse power it will be a good reason for a brand new rifle.
    The 340wby or 338rum should do the trick. They got more power to drive the heavy bullet and to long rangee hunting.
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      #3  
    Unread 12-06-2008, 05:20 PM
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    Re: 338/300 Win Mag

    Quote:
    Originally Posted by Topshot View Post
    Anyone had any experience with a 338 calibre rifle based on the 300 Winchester Magnum?

    I have a Sako .338WM and it seems like I should be able to simply run a 300WM reamer into it to obtain some extra horse power.

    I get 2427 fps with a 300grn Sierra Matchking out of my Sako .338WM, so I think I should be able to get 2550 to 2600fps with the larger 300WM case?

    Any ideas?


    For every 10% increase in case capacity at the same pressure one will only get a 2 1/2% percent in crease in velocity. The amount of case capacity difference between the 338 win and the 30/338 win is not enough IMHO to make it a worth while gain. A 338 RUM or Edge would definitely better the way to go IMHO
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