Those are exactly the same bullets I use.
I have the Hornady OAL gauge and Hornady comparator and love them.
When I make my dummy rounds, I go through everything I normally would, just not put in a primer and no powder. To make sure your sizing right when you lower you handle, the shell holder should be just kissing the bottom of the decapper/sizing die. This should give you enough neck tension to hold the bullet.
Ps. If you don't have a good manual and the ABCs of reloading, get them, and read them. The ABCs of Reloading helped me quite a bit. Plus if you can find a local mentor, that would be even better.