The only modern press I have used is the Lee Cast Iron Classic . It takes much less effort to operate than any of my old presses . That may help you with your joint issues . Dillon , RCBS, or any of the newer machines may all be easier to cycle but I have no experience with them and can not say one way or the other. No more than you are loading I would if it were me, buy the Lee and take the money I saved not buying a Dillon and buy components .

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Grumpy Old Man With a Gun