Has anyone used the new 245 grain Barnes spitzer on a deer. I'd like to know how well it expands. Will it expand as good as the trusty 250 grain Barnes Expander MZ? I shot it on paper, didn't group as well as the 250 MZ with 120 grains of 777, I need to try tweaking the powder load. I shot it over a Crony and the difference in muzzle velocity between the MZ & Spitzer got my attention.