Best way to do it is to put one target every 25 yards from 25 to 300 and shoot 2 shots if they group erll otherways more per target and you will be able to make your own chart.

Start to decide at which distance you like it zeroed and do that.

I have done this with my 300 win mag and plan to do it with my 375 and my 470 (only 100 meters then) and it is very interesting to analyze all the information.

I had that calibre before and it was lovely to shot at 300 meters. Swedish gun laws dont let you have that many guns as you want so I had to trade it.