[GWN7]

You can tell he also went to the range and practised because he didn't hit the delivery guy

I looked up what he might get:

Second Degree Assault

You may be charged with 2nd degree assault if you assault someone with a dangerous weapon. If the alleged victim suffers “substantial bodily harm” you will face a potential sentence of up to 10 years and fines of $20,000. However, if there is not “substantial bodily harm”, the potential sentence is dropped to up to 7 years in prison and $14,000 in fines.

Minnesota Statute §609.222