It seems some really don't understand how a 1911 functions and are giving bad advice........
every time you drop the slide on an empty chamber without holding the trigger down you allow the contact surfaces of the
hammer and sear to literally bounce against each other......what's that $100+ trigger job worth and that's if you don't ruin the
contact surfaces.
And NO you don't do it every time you go to slide lock, when you drop the slide on a new mag the stripping off of the round
slows slide velocity so as to not cause DAMAGE.....YES I said DAMAGE
Don't compare a standard GI or production 1911 against a finely tuned 1911 where the hooks are already ground to around .022
there's very little contact surface left to begin with and grinding them down more by slide bounce ( or worse chipping them),isn't going to help any.
Do as you wish with your 1911 just don't give bad advice to others.