I don't believe that sticking up for premeditated murderers is a value many conservatives are going to share with you. Maybe you can visit this poor innocent Kaarma in prison. I doubt he'll have many who are sympathetic to his plight beyond you....
I own a bunch of guns, personally, I would only shoot a somebody if my life was actually in danger. I could not bring myself to shoot a teenager, in my garage, who might be stealing my lawnmower.