Run the numbers for the 55’s vs the 75’s out to 1K. The drop difference of the 55’s vs 75’s is so minimal out to about 600 that I would call it negligible, from there the 75’s obviously take over. The windage is where the 75’s smack the 55’s all the way out. I have shot more coyotes with the 55 grain ballistic tips than anything but I converted everything over to the 75’s a few years ago.