Pain has been committed to stand trial for the murder, after a three-day committal hearing at the Bendigo Magistrates' Court this week.

His defence attorney Mark Gumbleton told the court Pain intends to plead guilty to the lesser charge of manslaughter.

Pain will face a directions hearing at the Melbourne Supreme Court on March 27.

DAY TWO: A witness has relived the moment a gunman with 'mad dog eyes' shot and killed his best mate outside a Raywood home.

Maxwell John Pain, 53, faced day two of a committal hearing at the Bendigo Magistrates' Court on Thursday, charged with the murder of David Paris, 36, on June 10 last year.

Mr Paris' best mate Don Romey told the court he approached Pain as he stood holding a shot gun in his hands after the shooting.

Mr Romey said he placed his hands on Pain's shoulders and told him to get back in his car.

He said Pain had "mad dog eyes” and he just had an “evil look” while he approached him.

"I said, 'Stop Max, get in the car, I'll sort it, don't do it, get in the car, go home' while walking towards him," Mr Romey told the court.

"I put my fingers on his shoulders. I could see a change straight away.

"It was like he was starting to listen to me.

“I didn’t want to draw attention to the gun, or anything else that was happening around us.”

The alleged shooting occurred a day after Pain's wife Tracy Bush had moved out of their Neilborough home to live with her daughter Rebecca Lambert and her partner, David Paris, in Raywood.

The court heard on Wednesday Pain had accused his wife of having an affair with Mr Paris, her son-in-law, and had made verbal, indirect threats to kill both people.

The couple and Ms Bush were preparing dinner on the night of June 10 - along with Mr Romey - when Pain drove up to the house in his white utility.

Mr Romey told the court Mr Paris "dropped what he was doing and came boring past me" when he heard Pain had arrived at their house.

He said he saw Mr Paris standing against a car near the house, and heard him tell Pain to "f*** off".

Mr Romey said he watched the exchange from the back of the house.

"I heard a loud noise - the gun. I was looking at Dave's back when he was shot," he said.

"I heard the bang, he was still upright, and he shouted 'I've been shot'."

The court heard Pain then drove off calmly before stopping and leaving his car.

Mr Romey approached him while others called police and ambulance.

The neighbour to the Raywood property also gave evidence on Thursday, along with Pain's cousin, his neighbour and Sergeant Benjamin O'Regan.

A magistrate will decide whether to commit Pain to trial on Friday.

DAY ONE: Maxwell John Pain accused wife of affair with son-in-law