CRFSC Practice Exam – Complete Guide for Canadian Firearm Safety

Question: 1 / 400

What type of black powder is the finest granule size?

Fg

FFg

FFFg

FFFFg

The finest granule size of black powder is represented by FFFFg, which is commonly referred to as fourFg or four grain. This terminology describes a specific grain size used primarily in applications requiring a very fast ignition and high burn rate, such as in pistols, rifles, or for priming other types of black powder firearms.

In the hierarchy of black powder grain sizes, Fg is the coarsest, meant for larger caliber firearms, while FFg and FFFg are intermediate sizes suitable for smaller caliber firearms and specific applications. As the granule size increases from Fg to FFFFg, the burn rate becomes faster. Therefore, FFFFg is ideal for consistent ignition and better performance in smaller, tightly charged loads. Understanding the differences among these types helps in selecting the appropriate black powder for specific firearms and conditions.

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