The Complete Guide to Bullet Types: FMJ, Hollow Point, Ball Ammo & More
When it comes to ammunition, not all bullets are created equal. Whether you’re training at the range, hunting, or focused on personal defense, understanding the different types of bullets is critical for performance, safety, and effectiveness.
In this guide, we break down the most common bullet types—including full metal jacket (FMJ), hollow point, ball ammo, and more—so you can choose the right round for your needs.
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Full Metal Jacket (FMJ)
Full Metal Jacket (FMJ) bullets are one of the most common types of ammunition, especially for target practice.
What it is:
A soft lead core encased in a harder metal shell (usually copper).
Key Characteristics:
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Smooth feeding in most firearms
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Minimal expansion on impact
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High penetration
Best Uses:
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Target shooting
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Range training
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Military applications
Also Known As:
Ball ammo (in military terminology)
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Ball Ammo
“Ball ammo” is often used interchangeably with FMJ, but the term comes from military naming conventions.
What it is:
Standard-issue military ammunition, typically FMJ.
Key Characteristics:
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Reliable feeding
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Consistent performance
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Non-expanding
Best Uses:
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Military use
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Bulk training
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General shooting
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Hollow Point (HP)
Hollow point bullets are designed for controlled expansion upon impact.
What it is:
A bullet with a hollowed-out tip that expands when it hits a target.
Key Characteristics:
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Expands (“mushrooms”) on impact
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Transfers more energy to the target
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Reduces over-penetration
Best Uses:
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Personal defense
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Law enforcement
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Jacketed Hollow Point (JHP)
A more advanced version of the hollow point.
What it is:
A hollow point bullet with a metal jacket around it.
Key Characteristics:
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More reliable expansion than standard HP
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Better feeding in semi-auto firearms
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Controlled penetration
Best Uses:
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Concealed carry
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Duty ammunition
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Soft Point (SP)
Soft point bullets strike a balance between expansion and penetration.
What it is:
A partially jacketed bullet with exposed lead at the tip.
Key Characteristics:
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Moderate expansion
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Deeper penetration than hollow points
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Good weight retention
Best Uses:
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Hunting (especially medium game like deer)
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Non-Jacketed (Lead) Bullets
These are traditional bullets made entirely of lead.
What it is:
A bullet without a metal jacket.
Key Characteristics:
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Lower cost
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Softer material
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Can cause barrel fouling
Best Uses:
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Revolvers
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Low-velocity shooting
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Reloading
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Polymer-Tipped Bullets
A modern innovation combining aerodynamics with expansion.
What it is:
A bullet with a plastic tip inserted into the nose.
Key Characteristics:
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Improved accuracy and aerodynamics
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Rapid expansion on impact
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Flat trajectory
Best Uses:
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Hunting
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Long-range shooting
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Open Tip Match (OTM)
Designed for precision—not expansion.
What it is:
A bullet with a small opening at the tip due to manufacturing, not for expansion.
Key Characteristics:
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Extremely accurate
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Not designed for expansion
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Consistent flight characteristics
Best Uses:
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Competitive shooting
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Precision rifle shooting
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Wadcutters & Semi-Wadcutters
Popular in target shooting.
What it is:
Flat-nosed bullets designed to punch clean holes in paper.
Key Characteristics:
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Sharp, clean cuts in targets
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Low recoil
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Typically lead-based
Best Uses:
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Target shooting
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Competition
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Frangible Bullets
Built for safety in close-range environments.
What it is:
A bullet made from compressed powder that disintegrates on impact.
Key Characteristics:
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Breaks apart on hard surfaces
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Reduces ricochet risk
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Limited penetration
Best Uses:
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Indoor ranges
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Steel target shooting
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Training environments
Choosing the right bullet type depends on your purpose:
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Training: FMJ / Ball Ammo
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Self-Defense: Hollow Point / JHP
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Hunting: Soft Point / Polymer-Tipped
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Precision Shooting: OTM
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Safety Training: Frangible
Understanding these differences not only improves performance—but also ensures you’re using the safest and most effective ammunition for the job.