As has been stated, run the brass through. Then, if this is the only 41 you will run them through, you shouldn’t have to full length them any more, just bell and crimp as they will be fire formed to that gun. As long as all your chambers are the same, that is. Saves on beating up the brass.
I have a few (maybe 10?) 41 brass I can give you if you get down this way and want them.