Learn the Basics of Ammunition with Winchester® Educational Infographics
By using retail surveys, the National Shooting Sports Foundation (NSSF®) estimates records were surpassed when nearly 14 million Americans purchased a firearm for the first time in the two years of 2020 and 2021, when a total of about 40 million firearms were sold. Gallup research suggests 44% of US adults—114 million people—report living in a gun household.
[ Read the SemperVerus article, The 4 Basic Rules of Gun Safety ]
With so many first-time gun owners needing to learn the basics of responsible firearm ownership, Winchester®—the largest small caliber ammunition enterprise in the world—has created “Introduction to Ammunition-Ammo 101” easy-to-understand infographics illustrating the ammunition categories of
- rimfire,
- pistol,
- centerfire, and
- shotshell,
and showcasing
- ammunition construction,
- components,
- calibers, and
- common usage
for each.
Click each image below to enlarge it on your screen. Also, click here to download the pdf document of the following images.

[ Read the SemperVerus article, Checklist: Matters to Consider When Deciding on a Handgun which includes links to web articles that are glossaries of gun terms ]


Since the early 1960s the phrase “Drive Defensively” has been taught in driver education courses across America. It means the skill to drive a vehicle safely despite any conditions you encounter and the actions of others. In a typical defensive driving course, students learn crucial crash prevention techniques that include: