This could go into three different categories of my Negative Outcomes database; ‘Poor Judgement,’ ‘Unjustified Shootings,’ and ‘POlice Involvement.’ For now, it gets filed in Poor Judgement.
Florida man shooting at target in backyard hits neighbor sitting at dining room table, deputies say
This is a Serious Mistake and a clear violation of Rule #4 “Know your target and what is beyond and around it.” ‘Target’ includes the target’s backstop.
Concealed Carry Skills and Drills downloadable eBook. http://concealedcarryskillsanddrills.com
Indoor Range Practice Sessions downloadable eBook. http://indoorrangepracticesessions.com
Serious Mistakes Gunowners Make, downloadable audio recording. http://seriousgunownermistakes.com
tacticalprofessor 
There are times when contemplating stupid takes one to new depths.