Run some numbers. I think you might be suprised
I've looked at how much elevation affects the numbers, immensely, I do need to look at the other variables.
Atmospheric pressure is the number one affect. I like using the actual pressure and leaving elevation outbid the equation.
You have a Leica 1600 rangefinder correct? That will give you all the important info you need. Pressure, temp, and angle. Yardage too. Just input into the calculator (strelok shooter etc) and twist and shoot!