About American Rifleman article on Berger Juggernaut bullet

Its interesting reading the Sandyhook trials where they did the ballistic testing for the development of the 45-70. A few things that stood out to me are that at two miles distance the bullets were hitting the sand at a near straight nose down position. That means that the bullets are staying point on to the trajectory arch. I have often pondered why that is so since for a two mile shot the position of the bullet in the barrel is very nearly reversed from its landing position. Either way nose up or nose down the bullet is presenting a lot of surface area to its forward motion effectively dropping its BC numbers drastically. With that much frontal area exposed and going from supersonic to subsonic is where the 308 falls apart.
The reason the 45-70 doesn't do the same thing I think is because starting out much slower the 45-70 goes subsonic before it reaches such a steep downward angle so it has already gone through the transonic turbulence before it gets there and the wobbles have already dampened out so it continues on a point forward course in its trajectory instead of tumbling helter sckelter in who knows what direction as the 308 can do.      Another thing I found interesting in the Sandyhook trials was that even with a very tall target at about 8' tall the bullet had such a steep angle of entry that they could hit just a few feet in front of or behind the target but still miss the target.  Kind of like standing between the rain drops and staying dry.
Did you read the article ? It is pretty good and maybe does point out that the bullet in question does extend the range of the 308 a bit beyond other more conventional bullets but I feel like the difference is a moot point because for me if I want to shoot farther than what I know my 308 will shoot well I will just step up to a bigger cartridge maybe or maybe not in the same caliber. Reason is that maybe the new bullet added 200 yards to the 308 before it falls apart but you can bet that those are not its best 200 yards. For that 1000 yard shot I would consider the new bullet in question but I would likely launch it from my 30" barreled 30-06 Ackley. That rifle gives me 300 mag velocity with 30-06 powder charges and shoot ever so tiny groups and I would reserve the 308 for 600 yard max shooting.
Anyway being such an old fart know it all I guess its kind of hard for the younger fellows writing for the magazines today to pass muster on our inspections. OK so here is something for you to ponder. Yesterday I was out with my 6.5-06 Ackley shooting three different VLD type match bullets all Hornady all ELD in 100, 120, and 130 grain. Velocities are respectively 3500, 3200, and 2900 fps. Shooting at 300 yards at my 6"x6" steel target all impact together on target with the same elevation and windage corrections. So the question is , whats the difference ?

Its snowing again. We dont have leaves yet but the green grass sure looks nice.
I also want to answer my own question from my second post about the three 6.5mm bullets.   The answer is RANGE!     The 300 yard shooting I was doing is not long enough range for the ballistic superiority of the heavier higher BC bullets to have shown the ballistic difference.  As the ranges get longer the difference in drop and wind drift will become obvious.  At some point the one with the lowest muzzle velocity will eventually have the highest retained velocity.
Oh and I must make a correction on the velocity of the 130gn bullet.  It is the only one I did not chronograph but instead took a wag at the muzzle velocity.   According to the drop tables in my ballistic app the velocity has to be closer to 3000 fps that my guessed 2900 fps.  So the velocities are 100gn bullet @ 3500,  120gn bullet @ 3200, and 130gn bullet @ 3000 fps.
That 6" square target I shoot at represents the kill zone on a coyote.  The goal is to make first shot hits on it to as far as I will shoot at coyotes without trying to get closer.   I dont want them any closer than 300 yards either because it is too damaging to the fur.
The other days shooting with a very stiff variable wind at about 10"30 I was piling shots just off the left edge of the target with 1 minute of windage.   I forgot my wind meter so was guessing velocity.     Going to a zero windage correction had me hitting just barely off the opposite right side edge.  Going to a .75 minute correction put all three different bullet weights on center of target.  That just goes to show how hard it is to stay on that 6" target under field conditions even at the 300 yard range.  Challenging for sure especially when your target can in an instant  move like a cruise missel.

That is exactly right kind of like the tortoise and the hare. The slower bullet starting out ends up the faster bullet at the end of a long run because the higher BC retains velocity better. I never really understood lag time or how to compute it to calculate drop and drift. I do know it is based on the percentage of velocity loss from initial MV. Since the lighter lower BC bullets shed velocity faster or have a greater percentage of velocity loss at the longer ranges they drop and drift more. In the ballistic program I use one of the options for showing trajectory is a line graph. With the line graph and the trajectories of all three bullets overlaid it is easy to see exactly where the heavier bullets overtake the lighter. Kind of like a picture is worth a thousand words or numbers in this case.
Say Mike were you affected by that earth quake we are hearing about ?