On Day 13 of the Oscar Pistorius murder trial, ballistics took center stage. Testimony centered around the fatal gunshots, whether Pistorious was wearing his prosthetic legs when he fired his weapon and how far away from the bathroom he was when he shot his girlfriend Reeva Steenkamp. One ballistics expert testified that Steenkamp was in a defensive position when she was shot.

At 1:15 p.m. ET, NBCNews' Richard Lui (@RichardLui) hosted a live discussion with investigative correspondent Jeff Rossen (@JeffRossen) and long-time NBC correspondent Mike Taibbi (@mbtaibbinbcnews).

Using the hashtag #AskNBCNews on Twitter and Facebook, viewers and readers submitted questions to our team to be answered live on the webcast. Check back here as a full video will be available to watch on-demand later this afternoon.