Hang onto your ammo-that new Uberti is much stronger than the blackpowder frame SAAs and other black powder revolvers that we worried about so long ago. And keep in mind that even those--in .32-20--had VERY thick cylinder walls.
Get hold of some of Brian Pierce's articles in "Handloader" and"Rifle" maazines and you will see that you aren't running much of a risk with any factory load in a NEW SAA clone like you have. And the Cattleman has a thicker cylinder than any of the gen-you-wine Colt SAAs of any vintage anyway.
If you decide that "rifle marked" (or ctgs. marked "WHV") ctgs are still a worry, sell then to a cartridge collector--they haven't been made for 'way over half a century! The rest of the stuff you have will work fine in any .32-20 in good condition.
Now if you're talking eardrum busting, not sixgun busting, you're on your own! EAR PROTECTION needed even in a 7 1/2" barrel .32-20!
Last edited by Mesa; 04/30/21.