Back when I shot TCs I pretty much always neck sized my 7-30 cases and never had a lock up problem. But then I do not tend to load to max and especially not over max pressures. If you are having problem getting NS cases to go back in your TC chances are you are exceeding SAAMI pressures by 20,000 or so and causing the action to spring and let cases expand too much. Book max loads shouldn't do that from my personal experience.
I loaded for accuracy not for a specific velocity.