Im shooting 168gr SMKs right now at 2625fps and finding that theyre dying out ~800m (agrees with what JBM says). I plug in data for 175gr SMKs with MVs posted by other members here and its saying that the bullets will go sub-sonic at around 900m.
Im looking at pushing out to 1000m with my 308, and while I know 175 is a better choice, the calculations dont seem to support that.
So what am I missing? what makes 175gr that much better than 168?