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.338 rum question

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  #1  
Unread 09-23-2008, 10:28 PM
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.338 rum question

I chronographed my .338 rum. IT is shooting 2850fps using a 250 grain soft point bullet. If I zero my rifle at 100 yards. How do I calculate drops at 200 - 500 yards. I have a Mark IV scope which as milldot reticle along with target turrets. How do I calculate how many clicks I will have to adjust my turret if say I try to take a 300 yard shot?
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  •   #2  
    Unread 09-23-2008, 10:32 PM
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    Re: .338 rum question

    I read some drop charts online that say this bullet should be 9 inches low at 300 so using my first mildot with is approx 3 inches at 100 would put me close to dead on at 300(using 3(") x 3 (1ooyards)). I'd rather not have to aim using the mil dots but make corrections using the target turrets. Each click is 1/4" adjustments at 100 yards.
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      #3  
    Unread 09-24-2008, 12:58 AM
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    Re: .338 rum question

    Hi There,

    9" @ 300 yrds will be 3 MOA or 12 clicks from a 100 yrd Zero.

    Regards 300wsmmad
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      #4  
    Unread 09-24-2008, 09:46 AM
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    Re: .338 rum question

    what about 22 inch drop at 400 yards and 45 inch drop at 500 yards? How many clicks would I need then?
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      #5  
    Unread 09-24-2008, 10:11 AM
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    Re: .338 rum question

    (Inches of drop)/(Click value*yards/100)


    22 divided by 1.00 = 22 clicks.

    45 divided by 1.25 = 36 clicks.
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      #6  
    Unread 09-24-2008, 04:49 PM
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    Re: .338 rum question

    Here's an online ballistics calculator, you can figure out most of this stuff on your own. A cool little toy.

    External Ballistics Calculator
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      #7  
    Unread 09-24-2008, 11:26 PM
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    Re: .338 rum question

    Quote:
    Originally Posted by MontanaRifleman View Post
    Here's an online ballistics calculator, you can figure out most of this stuff on your own. A cool little toy.

    External Ballistics Calculator
    Is this very accurate.. i asked this same question about a 338 RUM at higher altitude.. if so thankyou
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