Brown was hunting in the Five Forks area during the weekend of January 28-29 with a group but had gone off on his own the night before to go hunting.
Others from the group he was with heard a gunshot around 8pm from where he was hunting, shortly after Brown called an associate to confirm he had shot a wild pig.
"At around 8.10 pm Mr Brown called one of his associates, Craig MacGillivray, on his cellphone and reported he had just shot a wild pig.
"Mr MacGillivray walked to the area he believed Mr Brown to be in and observed Mr Brown across the ridgeline," Coroner Windley wrote in the report.
The pair were some distance apart and arranged to meet elsewhere. MacGillivray went back to the hut the party was staying to get a quad bike.
Upon his arrival at the rendezvous, MacGilvray was not able to locate Brown. The hunting group attempted to locate the missing hunter before calling police at 11.45pm.
Brown's medical records show he was a heavy smoker and his family had a history of heart disease.