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Lubricating the cases with One Shot prior to loading reduces the effort needed to re-size the cases. The amount of effort needed for the other positions is really minor including the primer. The roller handle will also spread the pressure across the entire hand and not just the middle that happens with a ball type handle. Once all positions have a case in them you produce a round with each pull of the handle. I would think it might reduce the strain. How much is hard to say.
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