Originally Posted by 32_20fan
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You do understand that these numbers are predicted numbers based on bullet dimensions only? The same bullet will have a different BC when shot from different barrels based on many variables. The only true way to establish the correct BC for each rifle / bullet combination is to shoot it at transonic - around 1300 fps and measure it there. Any range less will be skewed data. My 7RUM / 190 Matrix combo BC is .720 when the AB prediction is around .680. I am fixing to test the 168 ABLR in a 7SAUM and the 150 ABLR in a 7-08 Ackley and it will be interesting to see what the actual BC's are. Even the Berger 140 VLD in the Ackley is higher than predicted around .530 compared to AB prediction of .510.

Last edited by rifleman700; 11/16/15.