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Velocity question

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Unread 11-03-2011, 08:11 PM
Silver Member
Join Date: Sep 2003
Location: East Tennessee
Posts: 124
Velocity question

I'm trying to find a ballistics program that can help me figure out what type of velocity I should be seeing for my Kimber Montana 7wsm. I don't have access to a chronograph right now as the one I've had use of in the past got shot earlier this year.

I'm running 64 gr of '22 pushing a 162 A-max. I'm getting great groups but would love to know where I am at with velocity.

Is there such a program or do I just need to break down and buy a chronograph?


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    Unread 11-03-2011, 09:38 PM
    Silver Member
    Join Date: Apr 2009
    Location: Elkford B.C. Canada
    Posts: 111
    Re: Velocity question

    I would buy a chronograph, takes the guess work out of your reloading.
    Then you can compare what the reloading manuals say, quite an eye opener!!
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    Unread 11-04-2011, 12:16 AM
    Platinum Member
    Join Date: Jan 2004
    Location: Blackfoot, Idaho
    Posts: 8,858
    Re: Velocity question

    You can get along with out a chronograph. If you are super serious about long range shooting you can get along without one quite well. However, some amount of shooting will be necessary.

    This program is free for your use and is one of the better: JBM - Calculations - Trajectory
    I may be the slowest guy on the mountain . . . . but . . . . I'm on the mountain!
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    Unread 11-14-2011, 08:39 AM
    Silver Member
    Join Date: Oct 2006
    Location: Helena,Mt.
    Posts: 259
    Re: Velocity question

    No program can tell velocity from your rifle. Every one is somewhat unique. Roy is right, you don't need one, you can shoot at distance to get your drops and go from there. If you want to know for sure, say to judge where your are as far as the performance of your handloads, then you need to use one. Velocity is like a loading manual, it is a reference. It does not correlate to everyone across the board. Some rifles can take a higher charge of powder than others and not have pressure signs. Some rifles will shoot loads to a higher or lower speed than others. If your load is accurate and you are satisfied, shoot it. If you are feeling it is slower than it should be, find someone with a chrony and find out.
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