Standard options for shot primarily include which two factors?

The correct choice emphasizes the two main aspects that significantly affect the performance of shot in ballistic applications: size and composition.

Size refers to the diameter of the shot pellets, which can impact the pattern, spread, and overall effectiveness of the shot when fired. Different sizes are suitable for different types of shooting, such as hunting or sport shooting, where specific game or targets may require a particular size for optimal results.

Composition is equally crucial, as it pertains to the materials used in the manufacturing of the shot. Common compositions include lead, steel, and other alloys. This factor influences not only the weight and density of the shot but also affects necessary considerations like environmental regulations and lethality against various targets.

Together, size and composition are key elements that shooters must consider to achieve desired performance in their shooting activities, making this combination the standard for evaluating shot.