Guns, over-compensating for something?

Oh pity the poor homeowner:

A Minnesota homeowner who shot two unarmed teenagers in the midst of an apparent Thanksgiving Day break-in told authorities he feared they had a weapon, but acknowledged firing "more shots than I needed to" and appeared to take pride in "a good clean finishing shot" for one teen, according to investigators. Byron David Smith, 64, was charged Monday with two counts of second-degree murder in a criminal complaint that was chilling for the clinical way investigators said he described the shootings.

I'm guessing he felt like rubbing one out while describing it to.