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Need accurate BC for .257 100g TSX

 
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  #1  
Old 01-02-2012, 02:43 PM
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Join Date: Feb 2008
Location: Sammamish, WA
Posts: 64
Need accurate BC for .257 100g TSX

Has anyone shot this bullet at long distances (600 to 800 yards) and computed an accurate BC? The Barnes website lists it as .336, while the Weatherby Ammunition website page lists it as .42. That's a pretty big difference.

I want to develop accurate drop charts for my .257 Weatherby. The 100 grain TSX is shooting right at 3600 ft/second out of my rifle. Of course I would need to validate any data with my own gun and ammunition, but anyone with good data would help get me started.

Thanks!
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Old 01-02-2012, 05:53 PM
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Join Date: Mar 2002
Location: Wyoming
Posts: 2,615
Re: Need accurate BC for .257 100g TSX

I shoot the 100 grain ttsx in my 257 wby. I have found that with all Barnes bullets the bc numbers are very conservative. It seems to be higher than the .3's at the velocities I am shooting it..
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