By examining the general rifling characteristics, the number and measurements of... the land and groove striations, and... the direction of the twists on the cast... the shots to the ribs were made by a .38 caliber bullet, fired from a weapon issued by the D.C. police.
من خلال فحص ,الخصائص العامه لعملية القطع ....الاعداد و القياسات