dry firing with 22 calibers is normally discouraged. most centerfires are ok to dry fire and dry firing is a very well accepted practice when trying to build and maintain trigger discipline. many discourage young people from dry firing because of the off chance that they may try it someday without checking to make sure it's empty first and having an accidental discharge.
ignore my complete lack of capitalization. I still have no problem correcting your grammar.
I never said half the crap people said I did-Albert Einstein
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Bean counters told me I couldn't fire a man for being in a wheelchair, did it anyway. Ramps are expensive.-Cave Johnson.