During Oberg’s testimony, it was also revealed that Allen’s Sig Saur hadn’t been the only gun tested as a possible match for the crime scene bullet.
Eight total guns have been tested in the case, including three guns in 2017 and four others found in the Wabash River in 2022. Allen’s gun was the first to come back as a match to the unspent round found between Abby and Libby.
After the state finished its questioning of Oberg, the defense cross-examined her and attempted to hammer in on the possibility of inconclusiveness in her results or errors in the testing, citing how her findings only needed to reach
“sufficient agreement.”
Oberg stood by her findings and stated her field only has an error rate of 2-2.5%. She said that over her 17-year career and 100+ criminal trials, her findings have never been found in error or reversed.
But Rozzi pushed on the fact that Oberg’s conclusion was based on a test fired round, not a test ejected round like the one found at the crime scene. Oberg tied the crime scene cartridge to Allen’s gun specifically through three ejection marks.
Oberg stated an “ejector mark is an ejector mark whether its fired or cycled.”