RE: Comparing ballistics
DM
I see where you were going with that. I guess you lost me for a second. I agree that the 180 gr. is a poor choice in the 338.
A bullet can be aerodynamically shaped, like the 120-grain 7mm bullet , but because of its low Sectional Density or weight for the caliber, it will shed velocity much faster. If launched 500 fps slower than the 120 grain, the 175-grain bullet will have caught up with the 120 at the 500-yard mark due to its higher SD.
My point was more simplistic. That using trajectory as an argument for different calibers is moot.