aalf,
The G1 ballistic coefficient for the 142 6.5 ABLR is just weird. One oddity is that in bullets of the same caliber, with similar shape, BC increases or decreases proportionally to weight, though that will vary slightly depending on minor differences in shape.
The BC of the 142 should be approximately 10% more than the BC of the 129 6.5 ABLR. But the listed G1 of the 142 is 28% higher!
The really weird thing is the G7 BC of the 142 is 12% higher than the 129's, which is about right.
