His assessments are as good as any and better than most.
Lead , soft cast or factory swaged , avoid jacketed and as for powders,
the amount is more important than the speed. A light charge of Bullseye (2.7 grains) with a swaged lead HBWC (148 grain) will do no damage to revolvers made after 1900, the approx. transition time from black powder to smokeless. If in good sound condition of course !
Black powder era revolvers should not be shot with smokeless powder hand loads...just don't go there.
Stay with the mid range 38 special loadings , NO max and +P loads !
Gary