Originally Posted by jdmalm123
legs should be firm and pushing into the ground for a strict press, but no knee bend.
knee bend (some momentum) is push press, as noted.
This. If you can keep your lower body tight, you can add some weight or reps to your press pretty easily.
As for true leg drive, it's a push press, as others have already said. I enjoy push presses a good bit, and they have certainly helped my strict press.