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
I'm a big fan of the 70BT's out of my 6x6.8 in the mid 3200 range.The 75gr Vmax is stellar out of the 243. I went 33-34 coyotes straight, without an exit and no runners or floppers.
Then I tried the 55gr Btip pushed at 4,000fps+, and I had more runners and floppers than I cared for, and I even lost one coyote with it.
I am back to the 75gr Vmax in one 243 (Sauer 100), and I'm using the 70gr Btip out of another (TC Icon).
That's what I shoot in my 6 CM and those 70gr BT's w/RL16 shoot so well I don't really even have any interest in trying anything else.I'm a big fan of the 70BT's out of my 6x6.8 in the mid 3200 range.
I see no reason to try anything else.