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Chrono vs. Range Dope HELP

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Unread 09-01-2011, 12:35 AM
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Re: Chrono vs. Range Dope HELP

Originally Posted by Magnum61 View Post
I've been using the G7 instead of the G1. Will that make a huge difference?

No, you are fine with either, and the G7 will help out past 1200 to 1400 and beyond. But I feel with this caliber either should work out good.

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    Unread 09-01-2011, 01:34 AM
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    Re: Chrono vs. Range Dope HELP

    Originally Posted by budlight View Post
    bullets don't have a static BC. Some manufactures give the change in BC within velocity ranges. Example is a .560 BC at 2800 + FPS At 2400 FPS the BC is only .530 and at 2000 fps it is now only .500.

    So for a long shot you have to get an average BC because of the decreasing BC

    I think Sierra bullets lists velocity changes BC's for their bullets.

    I've often wondered about aerodynamic changes with a 6 groove barrel over a 3 groove. That is why range BC calculating with real life bullet drop actually shows true projectile BC. Some manufactures list highly overrated BC's for their VLD bullets just to make a sale and the bullets never live up to advertised BC in the field
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