Help with bore site ballistics app

Hello,

I have purchased a site lite ultra laser bore site and it has a program that will allow a user to select and input ballistics data to generate a printable target that can be used to aim at a set distance and will guide where to adjust cross hairs accordingly to bore site from the comfort of home. The problem that I am having is there is no option for 300 blackout in the app.

What load should I use for the closest option for Hornady 100g VMAX ammo to generate a target I can use to zero for 100yards?

Pics are screenshots from the web for reference.