Like a bunch of us he is getting older and has hand and wrist problems that may soon limit his use of the 38. He wants to stock pile ammo while he still can. 22 is cheaper than 38's. I got that much from his very first post. Not optimum solution but bowing to the realities of the situation. If you think you may have to finally give up the 38 then you want the best 22 round you can get, that would be a high velocity 40 gr solid plated bullet for reliability and maximum effect on a lumpy target with bones in it.
As seen by a dinosaur who cannot shoot the way he used to just 10 years ago. If you live long enough it gets all of us.
Good intentions will always be pleaded for any assumption of power. The Constitution was made to guard the people against the dangers of good intentions. There are men in all ages who mean to govern will, but they mean to govern. They promise to be good masters, but they mean to be masters.