I would use an air pellet rifle with hollow point pellets to kill the woodchuck. Be sure the rifle is WITHOUT BLOWBACK. The blowback feature is what makes them loud. I have an air pellet handgun without blowback - they are made both ways. The rifle will make it easier to hit the target. The pellet handgun was enough since my garden was very small.
The garden where I am now is much larger. Hmm, significant other asked me what I wanted for my birthday which is next month. Think I will tell him I want an air rifle. Yep, that’s what I’m going to do. Cheaper Than Dirt gun/supply store is in Fort Worth and not that far from this house.
That sounds like a good thing to ask for. My birthday comes in December, so I get to think a while longer.LOL