CCI Percussion Cap No. 10

CCI Percussion Cap No. 10 – Complete Guide

Overview

The CCI Percussion Cap No. 10 is a small, priming explosive device designed for use in black powder firearms such as cap-and-ball revolvers and muzzleloading rifles. It is manufactured by CCI (Cascade Cartridge Inc.), a well-known American ammunition company.

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1. Specifications

• Type: Percussion cap (non-mercuric, non-corrosive)

• Size: No. 10

• Diameter: Approximately 0.175 inches (4.45 mm)

• Material: Typically made with a copper cup

• Priming Compound: Modern, non-corrosive, non-mercuric priming compound

• Packaging: Commonly sold in tins of 100 caps

• Flash Power: Moderate – optimized for reliable ignition without excessive force

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2. Intended Use

• Designed for black powder revolvers (most notably older Colt and Remington cap-and-ball revolvers)

• Also compatible with some muzzleloading rifles using a percussion ignition system

• Not interchangeable with No. 11 caps unless modified

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3. Differences Between No. 10 and No. 11 Caps

Note: Due to slight size variations between brands and firearms, fit may vary. Some shooters crimp or pinch caps slightly for a better fit.

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4. Advantages of CCI No. 10 Caps

• Reliability: Known for dependable ignition

• Clean Burning: Less fouling than older caps

• Non-corrosive: Less risk of damaging the firearm

• Availability: Widely stocked by shooting suppliers

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5. Historical Context

Percussion caps were introduced in the early 19th century, replacing flintlock systems. They represented a leap in firearm reliability. While modern guns no longer use them, percussion caps remain popular among black powder shooting enthusiasts, Civil War reenactors, and muzzleloading hunters.

CCI has been producing percussion caps for decades, with continuous improvements in priming compounds to enhance safety and reliability.

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6. Safety Tips

• Store in a cool, dry place, away from heat or flame

• Handle with care: Avoid crushing or dropping

• Do not expose to static electricity or open flame

• Always wear eye protection when loading or firing

• Check caps for deformities before use

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7. Common Issues & Tips

• Misfires: Usually due to poor fit or fouling; ensure nipples are clean and dry

• Cap falls off: May indicate the wrong size – consider slightly crimping the cap

• Cap jams cylinder: Happens when spent caps fall off and get stuck – check nipple fit

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8. Alternatives and Substitutes

• Remington No. 10 Percussion Caps – Similar performance

• RWS 1075 – European alternative, often closer to a No. 11 size

• CCI No. 11 Caps – For slightly larger nipples (may need resizing)

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9. Legal and Regulatory Notes

• Percussion caps may be regulated under explosives laws in some areas

• In the U.S., they are typically sold without background checks, but local/state laws may vary

• Always verify legality before purchasing or transporting

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10. Summary

The CCI No. 10 percussion cap is a trusted component in traditional black powder shooting. It offers reliable ignition, non-corrosive performance, and a consistent fit for properly-sized nipples. Whether you’re into historical reenactment, target shooting, or hunting, it remains a top choice for percussion ignition systems.