I have been thinking about trying one of the Wilson chamber dies for seating and the DIY press thread got me to thinking. Is a arbor press really necessary? Why not just sit the bullet seater base on the top of the ram of a regular press and hold the die in place as you raise the ram. You can put a old die or 7/8ths bolt in the press to stop upward movement. Or even easier just use it like a Lee hammer die. It does not take a tremendous amount of force to seat a bullet