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Old October 8, 2012, 09:09 PM   #2
jepp2
Senior Member
 
Join Date: December 24, 2008
Location: Loveland, CO
Posts: 1,363
Good information, I hadn't see the report. Most BC's were found to be within 5% of the published values. I know Sierra lists multiple BC's for each bullet based on velocity. I wonder how they selected the BC to use for their comparison?

Bullet Name FMJBT
Diameter inches .224
Weight grains 55
Sectional Density .157
Ballistic Coefficients
.272 @ 3000 fps and above
.245 between 3000 and 2400 fps
.235 @ 2400 fps and below
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