Actually the BC of the 300 gr .430" XTP is .245not The 240 gr .430" is .205
https://www.hornady.com/bullets/handgun/#!/
Yes it would take more powder but how much more I'm not sure without checking through a chrony. I was only comparing the 300 to the Spear because the BC are closer.
Last edited by bronko22000; 03-17-2018 at 02:26 PM.