K,,,getting alittle muddled info,

So as I understand it, my current 617-6 10 shot could have a 6 shot cylinder (that will be reamed to .22WMR) fitted to the gun but, I would have to swap out the hand each time I swap cylinders?

Or are you saying that by using the newer 10shot hand it would allow merely a cylinder (extractor/star,cylinder) swap of the 10 to 6 shot?