I would think Redding would send you a seating stem for free, I know RCBS will. Any time I have asked RCBS for a seating stem so I can seat pointed bullets in my single shots, they have done so at know charge and usually in two to three days. The last time time I talked to the tech, he laughed said "you again" and we shot the breeze for a few minutes and I ended up with a pack of 8-10 different stems for various calibers by the end of the week. RCBS has always had great customer service from my dealings.
Mike