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Old April 26, 2013, 02:16 PM   #12
Tempest 455
Senior Member
 
Join Date: November 17, 2011
Location: TN
Posts: 118
On Sierra's website, they have a PDF charts that shows the BC changes with velocity. They say the 175 SMK have a .505 at 2,800 but less for example if you are at 2650.

http://www.sierrabullets.com/bullets...ient-rifle.pdf

They say the 168's closer to sea level will start to tumble at 1,000 yards and is why most people use the 175's for 1,000 yards.

Last edited by Tempest 455; April 26, 2013 at 02:22 PM.
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