It will include some exemptions, including for hunters who use single-shot rifles, such as bolt-actions, military members and sport shooters.

Source: https://www.greeleytribune.com/2023/02/23/colorado-gun-age-limit/

The technique only applies to single-shot weapons such as shotguns, which need to be reloaded one bullet at a time.

Source: https://gamerant.com/resident-evil-village-reload-faster-how/

While technically classed as a shotgun in-game, the Musket is similar to a single-shot rifle with a high damage output and impressive range.

Source: https://screenrant.com/how-to-get-musket-gta-online/