Currently, licensed gun-owners can provide firearms to people with no licence or training, so long as they are supervised. There is no limit to the number of firearms a licensed holder can own.
Cyndy McDonald's son Cameron, 29, died after being shot in the head while hunting in South Wairarapa.
The man who fired the fatal shot, Christopher Dummer, was a highly experienced hunter and a former branch president with the New Zealand Deerstalkers' Association.
McDonald said she relived her son's death every time another hunter was shot.
"I thought that would have hit home to a lot of people," she said. "But it doesn't seem to have changed, we're always hearing about more incidents. Friends phone up and say 'have you heard?' And it's just everything over again."
McDonald wants harsher penalties as a deterrent, and also tighter gun licensing regulations.
"We would like it to be like a driver's licence — every five years it has to be renewed because people's circumstances change. Currently there is no review, which is crazy."
Last month, Southland man Adam David Hill, 25, died after being shot in the chest by a member of another hunting party in Southland, and in March, a 22-year-old man was shot by his father near Opotiki.
Mountain Safety Council firearms and hunter safety manager Nicole McKee said: "Too many people are seeing colour, movement and shape and firing. The consequence is losing your mates."
There are 239,000 firearms licences in New Zealand and McKee said the number is rising.
