I’m on my phone, but try using your posted velocity from the box and punch the BCs posted by Gman into an online ballistics calculator to see if the difference in the two bullets roughly corresponds to what you’re seeing on the range. When it comes to long range shooting, the same bullet weight with different aerodynamics can have vastly different down range performance. Also, don’t get too hung up on a company’s claimed BC, as there are probably millions of threads online about the validity of those. Real world performance is what is important, but it should give you a rough idea.