If you have an iPhone or Android phone you could also download a ballistic calculator. I recommend a program called Strelok, I know that for android there are several versions that cost $0-8. I would pay $8 for the free version. Strelok+ is $5. It even has reticules to give you a visual idea of holdover, if your scope reticule is not available you can email the program creator and it will likely be included in the next update, sometimes in as little as a day.
Top notch, loaded with useful features. 237 reviews with 4.8/5 stars for Strelok+. The free version has 2,467 reviews at the moment with 4.7/5 stars.