Merlin guns come in a selection of calibers, including those suitable for long-range shooting. This freedom enables shooters to select the right gun for his or her specific needs, whether these are looking large game or competing at precision shooting competitions.inside addition to their technological advancements, Merlin guns are also incredibly versatile. Off handguns in order to rifles to shotguns, truth be told there's a Merlin gun for every type of shooter. Plus, these firearms come in a variety of styles and finishes, which means you can choose the one that matches your personal design and also needs.