if your only shooting to 300yds I'd try the 53gr v-max over imr 8208xbr. between the .290 bc and the 8208 shows respectable velocity gains over varget it would be a laser. suprisingly supersonic beyond 1000yds from a 26" tube but the wind owns it on the big end. screw a suppressor on the end and it should take out alot of the recoil as well as noise.