What Are Airgun Pellets Made Of?

Why Most Airgun Pellets Are Made of Lead

If you pick up a standard tin of pellets at any sporting goods shop, you are almost certainly holding lead. Manufacturers have used lead to make airgun ammunition for well over a century, and it remains the standard material across the shooting world today. The reason does not come down to tradition alone. Lead possesses three physical traits that make it uniquely suited for airguns: it is dense, it is soft, and it is relatively cheap to shape into precise forms.

Density gives a pellet weight without requiring extra physical bulk. In an air rifle, your pellet must slice through the air, fight crosswinds, and carry energy all the way to the target. Because lead is heavy for its size, a tiny lead projectile can hold its speed downrange far better than a lighter metal of the identical shape. This weight gives the pellet predictable stability, whether you are plinking paper targets in the backyard or controlling pests around an outbuilding.

Softness is just as critical for how an airgun actually operates. Air rifles do not use burning gunpowder to shove a bullet down the barrel; they rely entirely on a quick puff of compressed air. When that blast of air hits the pellet, the skirt (the hollow, flared base of the pellet that catches the air blast) must quickly flare outward. This process creates an airtight seal against the inside walls of the barrel, ensuring that no air leaks past the sides and wastes energy.

That same softness protects your barrel over years of shooting. Airgun barrels feature rifling (the spiral grooves cut into the inside of the barrel that spin the pellet as it travels). As a soft lead pellet travels through the bore, the metal easily squashes into those spiral grooves. The rifling bites into the lead to impart a steady spin, much like a quarterback throwing a tight spiral with a football, all without scratching or gouging the harder firearm steel of the barrel itself.

Lead-Free Alternatives and What They Use Instead

While lead works exceptionally well in an air rifle, many shooters want to avoid it. If you practice in a finished basement, shoot targets in a backyard where toddlers crawl on the grass, or hunt small game in areas where environmental regulations restrict toxic metals, lead can feel like a liability. Fortunately, ammo makers offer several non-toxic alternatives made from different metals and plastics.

The most common non-lead material is tin. Tin is a naturally soft, pliable metal that comes closest to mimicking the gentle barrel-gripping behavior of lead. Pellets made from pure tin or tin-rich mixtures are bright, silvery, and completely non-toxic. They do not leave dark gray smudges on your fingers, and they deform smoothly inside the rifled barrel. The primary difference is weight: tin is roughly two-thirds the weight of lead, meaning tin pellets fly much faster but catch more wind outdoors.

Other non-lead options rely on zinc. Manufacturers frequently use a zinc alloy (a mixture of two or more metals) blended with small amounts of copper or aluminum. Zinc is harder than tin and significantly harder than lead. It melts easily, molds into sharp, clean aerodynamic shapes, and costs less to manufacture than pure tin. However, because zinc is harder, its skirt does not expand as easily to seal air pressure, which means it requires tighter manufacturing tolerances to shoot well in your specific barrel.

You can also find composite pellets on store shelves. These designs pair a lightweight plastic sleeve or skirt with a dense metal tip, usually made of zinc, brass, or steel. The plastic outer jacket engages the spiral rifling and seals the air blast, preventing the hard inner metal core from ever rubbing against your barrel walls. Finally, some brands sell copper-coated pellets, but you should read the label carefully: many of these are still standard lead pellets dipped in a micro-thin wash of copper to reduce surface dust, rather than solid copper.

Six Steps for Handling Lead Pellets Safely at Home

You do not need hazardous materials gear to shoot lead pellets, but you should treat them with common-sense respect. Lead transfers from the metal surface onto your fingertips as a faint gray dust, and the primary risk comes from accidentally swallowing that residue. Follow this numbered routine every time you shoot to keep your home, your family, and your pets completely safe.

1. Keep all food, snacks, and drinks away from your shooting table.
   Reason: Lead dust transfers from your fingertips directly onto soda cans, water bottles, and finger foods, creating a direct path for the metal to enter your body.
2. Wash your hands with cold water and soap immediately when you finish.
   Reason: Cold water keeps your skin pores closed while rinsing away surface metal dust, whereas warm water opens pores and can increase skin absorption.
3. Catch your pellets with a trap filled with duct seal putty or ballistic mulch.
   Reason: Hard steel backplates smash soft lead into microscopic airborne dust on impact, while soft duct seal putty captures the pellet intact without creating flying dust.
4. Wipe down your shooting table and loading area with damp disposable towels.
   Reason: Sweeping with a dry broom or using an unfiltered household vacuum flings settled lead particles into the household air where you can breathe them in.
5. Store your pellet tins securely locked away from children and pets.
   Reason: Shiny, small pellets look like candy or miniature toys to curious toddlers, and swallowing a single pellet poses a severe poisoning hazard. Keeping your ammunition secured in an organized case or using an electronic gun safe lock ensures that young family members cannot get into your shooting supplies unsupervised.
6. Collect spent pellets in an empty container for proper scrap disposal.
   Reason: Dumping concentrated lead chunks into normal household trash sends toxic metal into local municipal landfills, while scrap yards can safely melt and recycle the metal.

How Pellet Weight Changes Flight Speed and Accuracy

Switching from lead to a lead-free metal changes how your airgun shoots downrange. Because metals like tin and zinc are noticeably lighter than lead, a lead-free pellet exits the muzzle at a much higher exit speed (muzzle velocity, measured in feet per second). While a faster shot sounds like an automatic upgrade on the surface, extreme speed can actually ruin your target accuracy.

In powerful rifles cocked by pivoting the barrel down to compress an internal spring or gas piston, a lightweight tin pellet can easily break the sound barrier. The sound barrier sits around 1,120 feet per second at sea level. When a small pellet goes supersonic, it produces a sharp, loud crack just like a firearm. More importantly, as that light pellet slows down a few yards out, it wobbles through the turbulent sound wave barrier, causing it to veer wildly off course.

Wind drift creates another practical challenge for lightweight metals. In backyard target practice, a gentle summer crosswind that barely nudges an 8-grain lead pellet can push a 5-grain tin pellet several inches away from your bullseye. Heavy lead resists wind deflection through simple mass and momentum. If you shoot at targets beyond twenty or thirty yards, you will usually find that lead produces much smaller, tighter target groups on breezy afternoons.

Downrange punch also depends directly on projectile weight. If you use your air rifle for pest control or humane small-game hunting, a pellet needs sufficient knockdown power (energy delivered on impact). Light tin or zinc pellets shed their energy very quickly because they lack the physical mass to carry punch across long distances. A heavier lead pellet holds its energy downrange, creating cleaner, more humane outcomes on garden pests.

Do Harder Metals Scratch or Damage Your Gun Barrel?

A very common fear among new airgun owners is that non-lead metals like zinc, brass, or tin will scrape away the rifling inside their rifle. After all, lead is buttery soft, while metals like zinc feel rigid and stiff to the touch. You can rest easy: commercial non-lead pellets will not damage, scratch, or ruin a steel airgun barrel.

Air rifle barrels are drilled from durable, hardened gun-barrel steel. While zinc and tin are harder than pure lead, they are still far softer than barrel steel. Tin deforms readily against steel, and zinc alloys used in ammunition are engineered to yield under high pressure without cutting into the bore. Plastic-skirted composite pellets keep metal out of contact with the steel altogether, sliding down the bore on smooth synthetic jackets.

The only time you face a genuine risk of barrel damage is if you load steel BBs into a rifled pellet barrel. Steel BBs are rock-hard steel balls designed strictly for smoothbore barrels without rifling grooves. If you shoot a hard steel BB through a rifled pellet barrel, the steel ball will grind across the delicate spiral lands and flatten them out over time. If you want to shoot inexpensive round steel balls for casual target practice, stick with dedicated BB guns for backyard plinking that use smoothbore steel barrels built specifically for that ammunition.

Barrel cleaning routines do change slightly depending on what metal you choose to shoot. Lead pellets leave a faint film of soft lead inside the bore, which actually helps smooth out tiny microscopic tool marks over time. Zinc pellets do not leave lead residue, but they can leave a faint, chalky metal wash if you shoot hundreds of rounds in an afternoon. Running a dry cotton cleaning patch pulled through from the breech to the muzzle easily wipes away that surface residue without harsh chemical solvents.

FAQs

Are all airgun pellets made of lead?

No, not all airgun pellets are made of lead. While lead remains the most common and budget-friendly metal, manufacturers also make non-lead pellets from tin, zinc alloys, copper, and polymer composites. These non-toxic alternatives are clearly labeled on the tin as lead-free for use in sensitive backyard areas or restricted hunting zones.

Can lead absorb through your skin just by touching pellets?

Elemental lead in metallic pellet form does not absorb directly through unbroken skin in dangerous amounts. The primary health risk comes from transferring gray lead residue from dirty fingers into your mouth while eating, drinking, or touching your face. Washing your hands thoroughly with soap and cold water after every shooting session eliminates virtually all of this risk.

Do lead-free pellets shoot as accurately as lead pellets?

Lead-free pellets can shoot accurately, but they tend to be far more sensitive to distance, wind, and gun power. Because metals like tin and zinc are lightweight, high-powered rifles can push them past the sound barrier where shockwaves ruin stability, and outdoor breezes push them off course easily. In lower-powered airguns at short indoor distances, however, lead-free pellets often shoot very neat, tight target groups.

Why are lead-free pellets louder when you fire them?

Lead-free pellets sound louder because their lighter weight allows the airgun to push them at much higher speeds. If a lightweight tin or zinc pellet exceeds roughly 1,120 feet per second, it creates a sharp supersonic sonic boom crack in the air. A heavier lead pellet stays below that sonic threshold, producing only the dull thump of expanding air from the muzzle.

Why do non-lead pellets cost more than traditional lead pellets?

Non-lead pellets cost more because raw metals like pure tin and specialized zinc alloys are significantly more expensive to buy than scrap lead. In addition, these harder metals melt at higher temperatures and require specialized stamping dies that wear out faster during manufacturing. Those extra production and raw material expenses carry over into the retail price of each tin.