barrel, the lens and grooves which make the bullet spin make marks on the outside of the bullet. >> they will design the barrel to have a certain direction of twist, a certain number of landing grooves, a certain measurement for the landing grooves so those are intentionally put in by the manufacturer. surprisingly when the bullets from cliff's gun were compared to the bullets from cliff's autopsy, they did not match. investigators checked all of the local pawnshops and discovered that the cowen brothers had pawned some of the alma murke's jewelry. with a search warrant police found several other items belonging to the murke's in their possession. >> he had a wallet. he had two social security checks which he was trying to sell. he had all types of jewelry. >> but investigators did not find a .25 caliber pistol like the one used in the murder.