I hate to say it FRiends but I believe the .223 was the primary weapon. The shotgun was in the trunk.
Main gun in Newtown also used in D.C. sniper shootings
http://www.usatoday.com/story/news/nation/2012/12/17/bushmaster-assault-rifle-in-newtown-shootings/1772825/
In the school shooting, Connecticut Chief Medical Examiner H. Wayne Carver said all 26 victims were hit multiple times, suffering “devastating” wounds, all apparently traced to the rifle.
http://articles.latimes.com/2012/dec/16/news/la-nn-connecticut-school-shooting-assault-rifle-20121216
Lanza, 20, fired a Bushmaster .223 semiautomatic rifle to kill many of the 20 children and six adults at the school Friday, Connecticut State Police Lt. J. Paul Vance said. He used a Glock 10-millimeter handgun to shoot himself in the head. He also carried at Sig Sauer pistol. A shotgun, the type of which was not identified, was found in the trunk of Lanza’s car outside the school.
“The Bushmaster was used in the school, in its entirety, and [a] handgun was used to take his own life,” Vance said.
There is no truth in the press today so we are left with 3 articles saying yes and three saying no. I trust no one until we know the truth and like Benghazi... we may never know the truth.
LLS
I hate to say it too, but it looks like it was the AR-15.