Most range finders have a balistic function built into them. Many have say 10-20 pre programed ballistic curves built into them. with the option of zeros at 100 or 200 yrds. They will often also have a custom setting where you can enter your own values to generate the curve.
A function I have found I never use I normally have a drop table printed out from a program like JBM for a specific load I am shooting if its not one I know nearly by heart.