I have used 75g vmax out of my 243 at 3350 fps and they are great on coyotes.I have the same exact gun but have been running the 80 grain ELD VT's great accuracy but have to take alot of follow up shots to anchor them thinking about going to the 75 grain vmax, running 40 grains of varget at 3231fps
The 75 v-max is not likely to do better. If you're going to make a switch, I would recommend the 87 v-max or 90 eld-x. I shot the 87s for a number of years out of a 243 and 6 Grendel. They hit with authority.I have the same exact gun but have been running the 80 grain ELD VT's great accuracy but have to take alot of follow up shots to anchor them thinking about going to the 75 grain vmax, running 40 grains of varget at 3231fps