Maybe this will help...

I was only stating that weight does have a decided advantage in Ballistic Coefficient, and Ballistic Coefficient has a definite effect on wind drift. It is enough to effect a bullets point of impact. Whether it is enough to make or break a big game kill shot is dependent on many factors. But weight matters, all other things being equal. The info below illustrates my point.

.224" (.22) 52 grain Match, BC .253
.284" (7mm) 145 grain Match, BC .465
.308 (.30) 168 grain Match, BC .480
.308 (.30) 190 grain Match, BC .540

“Note that in the .308 pair, the heavier bullet (which has the greatest sectional density) has the better BC. The extremely poor SD of the .224" bullet lowers its BC, even though its shape is similar to the others.”
From: The Ballistic Coefficient of Rifle Bullets
By Chuck Hawks