Is .356 a Caliber? Understanding Cartridge Designations
The question "Is .356 a caliber?" requires a nuanced answer. While there isn't a widely recognized, commercially produced cartridge officially designated as ".356," the number itself suggests a caliber in the approximate range of 9mm (.354 inches). Let's delve into why this isn't a simple yes or no answer and explore the intricacies of firearm cartridge designations.
What is Caliber?
Caliber refers to the approximate diameter of the projectile (bullet) a firearm uses. It's usually expressed in inches or millimeters. However, the relationship between the caliber designation and the actual bullet diameter isn't always straightforward. Several factors can influence this:
- Measurement Methods: Different countries and manufacturers have historically used varying methods for measuring caliber, leading to discrepancies.
- Groove Diameter vs. Land Diameter: The rifling in a gun barrel has lands (raised portions) and grooves (cut sections). Caliber can refer to either the diameter across the lands or the grooves, leading to slightly different measurements.
- Nominal vs. Actual: The caliber might be a nominal value, a rounded figure for marketing or historical reasons, rather than a precisely measured dimension.
Why .356 Isn't a Common Cartridge Designation
While a .356-inch diameter bullet is conceivable, there's no widely known, commercially produced cartridge specifically labeled as ".356." The firearm industry generally favors established calibers for ammunition production and distribution. This standardization ensures compatibility and readily available ammunition.
The absence of a .356 designation doesn't mean a custom or niche cartridge couldn't exist with that approximate diameter. Some gunsmiths and enthusiasts might create unique cartridges, but these would be extremely rare and not easily found in the wider market.
Similar Calibers and Their Significance
Numbers close to .356 often represent existing calibers. For instance:
- 9mm (.354"): This is a very common and widespread caliber used in handguns worldwide. The slight difference (.002 inches) between 9mm and .356 is negligible in practical terms.
- .357 Magnum: This is a powerful revolver cartridge, slightly larger than .356.
- .35 Remington: This is a rifle cartridge, significantly larger than a potential .356 handgun round.
It's crucial to understand that slight variations in measurements exist even within established calibers, due to manufacturing tolerances.
Conclusion: Context is Key
In summary, while .356 could theoretically represent a caliber, its absence from standard cartridge listings suggests it's not a recognized commercial designation. If you encounter this number in a context related to firearms, it's essential to consider the source and determine if it refers to an approximate measurement related to other calibers, a custom cartridge, or a simple misunderstanding. Always prioritize safety and accurate information when dealing with firearms and ammunition.
