Limiting 2nd amendment legal gun ownership to single shot firearms only. If a alleged marksman cannot hit their target with a single shot they shouldn't have access to a firearm until they demonstratably can. Why does a "alledged hunter"? need the ability to fire 5 or 10 or 100 rounds to take down their prey? The first milita only had single shot firearms.
A automobile driver has to be re-licensed periodically to verify that they can safely drive a car, why not gun owners?