Mark, I don't think it makes any difference. The roll crimper I have from Ballistics Products has a roll pin when you look inside the crimper. The speed of the drill (fricton of the roll pin) will make the shell end roll over. A variable speed drill I think does help the process. I think your reloading will be much faster because you have a drill press. I don't and have to use my Dewalt. Does the job but can get tiring if reloading a bunch of shells.
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