Modifies provisions relating to minimum sentences

HB 773 modifies Missouri's minimum prison terms for certain felony offenders. It requires offenders with one prior prison commitment to serve at least 40% of their sentence (or until age 70, whichever comes first) before parole eligibility, increasing to 50% for two prior commitments and 80% for three or more. Dangerous felony convictions (per §556.061) require an 85% minimum sentence. The bill also creates a sentencing advisory commission to study sentencing disparities and alternative programs, though this is a secondary provision. The changes apply specifically to listed felony offenses and do not affect probation rules or certain offenses like domestic assault.