Doyle E. Handle, 52, of Grove, pleaded guilty to first-degree murder in the May 23 death of Dena Davenport, 49.
“He is remorseful, but he is also taking responsibility for his actions,” said Kenny Wright, assistant district attorney.
Handle will have to serve more than 38 years before he is eligible for parole, Wright said. He also was fined $10,000, ordered to pay $15,000 in restitution and required to pay $5,000 to the victim compensation fund, Wright said.
Handle waived his right to a preliminary hearing Tuesday and entered the plea Wednesday.
Davenport died from a gunshot wound to the head, according to the state medical examiner.
Handle told police the couple had been arguing and he shot her after they struggled over a gun, according to an arrest affidavit.
A neighbor told law enforcement officers the couple argued constantly and Handle repeatedly said he wanted to shoot his wife in the head, the affidavit states.