Yes, dry fire the Ruger all day.
(it says this in my manuals
Mk1 & Mk2)
No, there are no "quiet" loads which
will not cause some level of perm.
hearing loss. The frequency at which the
"soft/quiet" loads explode are within
a range...that range is what gets hammered.
Don't push mow grass, weed eat, chainsaw, rider
mower, ride with the windows down at high speed
etc....it's a long list that many ignore
for ease of living.
Oh, and "soft/quiet" rounds are MUCH louder in
handguns...a simlar round in a rifle will have
a far different impact.
VF