I realize that I never suggested what my "preferred gun policy" is.
I think a tiered licensing system along these lines is probably ideal:
Class #1: Any rim-fire weapon and ammunition| no license required, can't conceal carry
Class #2: Ability to purchase center-fire weapons and ammunition | shall issue license upon completion of state-subsidized course, comes with nationwide concealed or open carry permit
Class #3: Automatic weapons, other Title II weapons, and other military small-arms | participation in gun club or state-militia with references, thorough background check, regular mental health checks subsidized at the state's expense.
People who own a weapon in a class that they don't have a license for are given the opportunity to meet the requirements, retroactively, as an alternative to fines or jail-time in so much as they didn't commit a violent crime.
Former felons get to own guns and get their voting rights back automatically upon completion of their sentence, unless there is reason to think they are at a high risk of recidivism.
Nevertheless, I think solving the social maladies that we find in the U.S is a more comprehensive and thorough solution that has many more tertiary benefits.