I was looking at this and noticed:

http://www.sierrabullets.com/i...um=3000&bullettype=0

I did not realize the BC of a bullet can change as it flies at different speeds. It would appear there is an ideal velocity window here.

Somethin' new ever'y day.

A good reason to figure out drop then check by actual shooting. Seems that bullet likes it faster than 1800fps.

Depending on the shape of the bullet, as speed drops away, the BC can go up, down or remain about the same.

G1 bc are for a bullet that is 3 calibers in lenth with a 2 caliber ogival radius. if this shape bullet is used its bc will remain the same but most modern bullets are not of this shape so the bc reflects the ave drag of the projectile over distance. g7 bc calculations will give you a better idea of traj with a vld style bullet but the best way to know your traj is to go out and ladder shoot at distance increments of 100 yards to learn where you bullet will hit. also as barometric pressure humdity ect changes so with the bc.
go to www.frfrogspad.com and there is some good data on bc in a short consise format. I have not checked but I suspect gerard may have some good info on his website

This is the big bore forum, where shooting is rarely beyond 300 yards. Up to 400-500 yards there is just not that much difference in BC's to make any practical difference in hunting/shooting.

My recommendation is to find a bullet with about a .350-.400 BC and go out and get to know the rifle and the loads out to 400 yards. If CEB comes out with .450-.500BC Raptors, so much the better. In Africa you will not need that for dangerous game beyond 200 yards (and 200 only under 'perfect' conditions), nor for plains game beyond 300.

I have yet to see ANY animal that can read and understand these charts.

That is why we read and understand the charts, so that we can do a better, reasoned job. It is what sets us apart from the animals.