The lovely thing about .243 is that you can range from 55gr to 100gr and dependent on your twist go up to 105 or even 110gr.
With reloads mine will easily preform sub moa across the spectrum, 55's were wild, stupid fast'n'flat although wind affected.
75's are a nice best of both worlds.
My current load of choice is 100's which are comparatively slow'n'steady but it takes a good cross wind to blow them aside.