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Need some figures run please

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  #1  
Unread 07-25-2004, 12:18 PM
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Need some figures run please

I wonder if someone with a ballistics program could run some numbers for me.

I'd like to know the approx. MV of a 140 gr. SMK over 46.0,48.0,and 50.0 grains of Re 22.

6.5-284
Lapua brass
Fed 210 primers
26" barrel

Any help would be appreciated
Chris
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  •   #2  
    Unread 07-25-2004, 03:03 PM
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    Re: Need some figures run please

    Assuming your touching the lands, & bullet shank seated .26 into neck:
    48gr= 2720fps (~47kpsi)
    50gr= 2820fps (~51kpsi)
    52gr= 2920fps (~57kpsi)

    This from QuickLoad.
    SAAMI max =59kpsi
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      #3  
    Unread 07-25-2004, 07:18 PM
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    Re: Need some figures run please

    Thanks Mikecr

    I'm actually .010 off the lands and quite a ways into the case neck. OAL is 2.965, 3.465 on a stoney point comparator. But at least I've got some ball park figures to start with.
    Thanks again
    Chris
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      #4  
    Unread 07-26-2004, 03:16 PM
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    Re: Need some figures run please

    The reduced starting pressure offsets the reduced case capacity w/regard to pressures, and velocities should remain very close.
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