My observation is, as a general rule, bullets with a higher Sd tend to perform more consistently at the terminal end. Of course there can be other considerations. An 06 has to work really hard to acheive 2800fps with a 180gr--and will often be closer to 2700fps. A 165 gr can often get a tad over 2900fps. Take your pick--usually the best choice is the one that shoots best.........
Casey
