Ballistic coefficient tends to drop a lower retained velocities.
I became aware of that years ago, looking at Sierra Manual, I believe. There are several factors that will affect flight.
The part I like is being able to see what BC is with the actual conditions I'm testing the load are. Lately, I've gravitated towards lower velocity rounds, and with some of them, 458 Socom in particular, it gives me a better idea of what it really is. Another is that some bullets don't have a published BC, and whether it is relevant or not, I just like to know what is happening with a 425 grain LFN GC with a MV of 1650 fps (.45-70) or 405 LFN GC at 1550 fps (.458 Socom) are doing at 100, 200, 300 yards, and where it may go transonic.
Probably information that is really not needed. I've never shot extended distances with either round, but I'll have an idea of what to expect at the distances I would use such rounds during load work up and before actual shooting at that distance.
