Five men have been charged after two dogs were killed during an argument over hunting on a farm near Nyngan in western New South Wales.

Police said three men from Orange were allegedly hunting on a public road and inside the boundaries of a Coolabah property which they were not authorised to enter about 6:00pm on Sunday.

The hunters, two aged 20 and one aged 31, were confronted by the owners of the property, a 74-year-old man and his 42-year-old son.

"As a result of the confrontation, two hunting dogs have been killed, and a vehicle has been damaged," Detective Inspector Jay Locke said.

A crime scene was declared after police were called, and the father and son farmers were both arrested on Monday and charged with firearm and animal cruelty offences.

"The 74-year-old man was charged with firing a firearm disregarding safety and a number of firearm storage offences," Detective Inspector Locke said.

"And the 42-year-old man was charged with two counts of serious animal cruelty, and firearm storage offences."

The three men were charged with hunting on public land without authority, entering private land to hunt without consent, and possession of knives in public without a lawful excuse.

Police said investigations were continuing and reminded the public to contact police first if they see offences being committed on private property.

Mayor calls for stricter deterrents for illegal hunting

Bogan Shire Council Mayor Ray Donald has called for stricter penalties for illegal hunting.

Cr Donald said the current legal implications were not serious enough to deter people from the activity.

"The court system and the level of punishment for trespassing needs to be seriously looked at to radically increase the fines and the speed that people are prosecuted if they are caught," he said.

"It's a very serious case, I understand the actual confrontation between the landholders and the trespassers occurred on a public road, which puts a slightly different perspective on it.

"It's an incident that should highlight the need to contact local police, and in fairness to them they can't be patrolling all lonely roads in any shire all the time."