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Drop Chart Help?

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Unread 09-13-2012, 11:22 AM
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Re: Drop Chart Help?

Originally Posted by ovastafford View Post
I appreciate all the responses. My Chronograph was giving me around 2900 average. Of course that was on a different day conditions etc. My load is 51.9 grs of 4831sc lapua brass around 20 thou off the lands. My barrel is a 26" Brux 8 twist.

I know this powder is not very temp sensative but how much velocity change can I expect going from say 105 degrees to 85 and all the way to 30 degrees Fahrenheit?

I don't know what the velocity difference is but I have found that under 500 yards my impact for hunting is negligible. One click downward for each 25 degrees colder out to 700, 2 for each 25 between 700 and 1000. My clicks are .33moa. This works is for me with my turrets.

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