Ammunition Sizes
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Ammunition Sizes Visualized From Smallest to Largest


Visualizing the different sizes of ammo puts things in perspective.

When one first gets into firearms, it can be a bit overwhelming hearing all the different caliber options out there. Literally hundreds of different rounds have been developed in the long history of firearms. Some being more successful than others obviously.

Things get especially confusing for newbies when they hear the numbers attached to each caliber. For example, it can be hard to explain how a .470 Nitro Express is longer than a .600 Nitro Express. Especially when the .600 is the more powerful round.

Today's quick video helps to visualize the sizes of different rounds in comparison to one another. It starts with a tiny 2.34mm rim round and works its way up to 800mm Schwerer Gustav.


Some of the calibers shown here are quite obscure. Such is the case with 2.34mm, which is used in a tiny Swiss-made revolver called the Swiss Mini Gun. It is so small that is considered a novelty rather than a practical firearm.

Oh, and if you are curious about that 800mm round at the end, that was for a gigantic railway gun developed by the Germans back in the 1930s. The gun was so large (155 feet long), that it needed a train car for transport! Thankfully, that large size made it impractical, and it saw limited use in combat. The Germans ended up destroying it themselves when they realized U.S. Troops were closing on the gun's position in April of 1945. They did not want it to be captured. We can be thankful that one is no more.

Obviously, this video does not show every type of round ever developed. It is also strictly a size comparison since wider cases often have more powder, and as a result, more power. See once again the .600 Nitro vs .470 Nitro comparison we mentioned earlier. We do wish they had included some more popular rounds like 9mm Luger, .45 ACP, 7.62x39mm, and more. Still, this is a solid rough reference for how large some of these popular rounds really are.

For more outdoor content from Travis Smola, be sure to follow him on Twitter and check out his Geocaching and Outdoors with Travis YouTube channels