noslers 5th edition gives a minimum load of 33.0 grains and a max load of 37.0 grains of IMR4064 powder for 85/90 grain .243 bullets. it lists the 33.0 grain load as being the most accurate load. velocities are: 33.0 grains= 2809 fps: 37.0 grains= 3139 fps out of a 24 inch barrel. hope this helps.