Sure depends on where you are, what, and how far you're shooting. In-field realities compared to on-range theory sezz you probably will never notice any performance difference between the 36 and 40. Keyboard windy days, and even paper target windy days, are not the same as muddy footing, short winded breathing, too much coffee and uncertain distances.
For my tastes I'd compare the weight of two rifles identical except in caliber. If the difference made any difference to you one way or the other, that would be as realistic a comparison as any holes in paper or fingers on keyboards.