Stop in for a cup of coffee

So I have what is probably a stupid question as typical but I’m gonna ask it anyway.
I’m running hydraulic lifters. To measure for my pushrods, I’m guessing I need to pump up the lifters right? I’m guessing oil can into the holes?
If you have a drill press,a can with oil.set lifter in oil, and a round rod with a blunt tip in chuck. Cycle lifter until it gets solid. Dont turn on the drill press. Thats how i prefill my lifters.