I'd trust a cup/core 200 or 210PT to expand better if we near 350-400 yds, but truly trajectory starts looking loopy at those ranges w/those loads.
Problem with the 210 Partition is has a relatively poor BC and it starts to matter at those ranges. A 210 would be ~1850 FPS while a 185 would be over 2000 FPS. I can't speak from experience, but I'd trust the 185 more. And the trajectory is indeed better as you mentioned. The 185 has a good BC for its weight and the hole in the tip is pretty large. Barnes told me it would open easily down to 1800 FPS.
