Almost anything can be done with the proper application of enough cash

It sounds like you are saying that you want to do this conversion and spend this money just to keep your kids from shooting full power ammunition in the Model 19 PPC revolver after you pass away ?

I usually say convert what makes you happy and pay no attention to the opinions of the rest of us on the Internet

But I have to ask, Would it not be easier to teach your children the dos and don'ts of Firearms Ownership ?

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"Acta non verba"