We have not seen the ballistics reports. The Autopsy reports mentioned gunshot wounds of "small" and "medium" sizes, but as has been laboriously pointed out, the Autopsy Reports are not ballistics reports, and do not give forensic information denoting what caliber nor from what firearm the bullets came. That simply is not the job of the Medical Examiner. Sizes are subjective, and because of the elasticity of skin and other factors may be misleading.
So, simply put, the evidence given does not support your conclusion.
Or, more simply put, that's bullsh*t.
Wrong...the medical examiners provided very specific measurements and anatomical descriptions of the wound sizes and locations...in some cases they also recovered, tagged and described intact and deformed bullets which were described as "small" or "medium" caliber.