4.5 mm (.177) Airgun Ammunition

4.5 mm (.177) Airgun Ammunition: The World's Most Popular Airgun Calibre

4.5 mm (.177) is the most widely used airgun calibre in the world. Its excellent accuracy, flat trajectory and enormous choice of ammunition make it the preferred calibre for recreational shooters, competitive target shooters and precision enthusiasts alike. At SEM Jacht & Schietsport you'll find an extensive range of 4.5 mm airgun ammunition from leading manufacturers.

Whether you're looking for premium match pellets, affordable training ammunition, precision slugs for powerful PCP air rifles or BBs for compatible airguns, our 4.5 mm range offers the right projectile for almost every application.

Why choose 4.5 mm (.177)?

The .177 calibre is renowned for its excellent balance of speed, accuracy and versatility. Its relatively small diameter allows higher muzzle velocities and a flatter trajectory, making accurate shot placement easier at typical airgun distances.

• The world's most popular airgun calibre.
• Suitable for both air rifles and air pistols.
• Available in a wide range of projectile types and weights.
• Ideal for recreational shooting, target shooting and competition.
• Available as pellets, slugs and BBs.

Match ammunition with 0.01 mm head size increments

Maximum precision depends on more than calibre alone. Premium manufacturers such as RWS and JSB Match produce match pellets with different head diameters to optimise barrel fit.

• 4.49 mm
• 4.50 mm
• 4.51 mm
• 4.52 mm
• 4.53 mm

Although the difference is only 0.01 mm, it can noticeably influence accuracy. Many competition shooters therefore test several head sizes to determine which diameter performs best in their individual barrel.

From affordable training pellets to world-class match ammunition

Every shooter has different requirements. Gamo offers reliable and affordable pellets for general target shooting, while manufacturers such as RWS, JSB Match and H&N produce premium match ammunition with exceptionally tight tolerances in diameter, weight and consistency.

Choosing the right projectile weight

Projectile weight is normally expressed in grains (gr).

Common weight ranges include:

• 7.0 – 7.9 grains
• 8.0 – 8.6 grains
• 9.0 – 10.5 grains
• 10.5 – 13 grains

Lighter projectiles generally achieve higher muzzle velocities and flatter trajectories, while heavier projectiles tend to retain velocity more effectively. The ideal weight depends on your airgun and intended use.

Choosing the right projectile shape

• Wadcutter – flat-nose pellets for clean holes in paper targets.
• Domed (Round Nose) – the most versatile design for general shooting.
• Pointed – streamlined pellets with a pointed tip.
• Hollow Point – hollow-nose projectiles available for specialised applications.
• Slugs – aerodynamic projectiles designed for powerful PCP air rifles.
• BBs – steel or lead spherical projectiles for compatible airguns.

Leading 4.5 mm ammunition brands

Our 4.5 mm (.177) range includes products from trusted manufacturers such as:

• JSB Match
• RWS
• H&N Sport
• Gamo
• FX Airguns

From premium match pellets to recreational ammunition and modern PCP slugs, you'll find the right 4.5 mm ammunition for your airgun.

Frequently Asked Questions

Why is 4.5 mm the most popular airgun calibre?

Its combination of accuracy, high velocity, flat trajectory and wide ammunition availability has made it the global standard for airguns.

Which pellet head size should I choose?

That depends on your barrel. Many competition shooters test head sizes between 4.49 mm and 4.53 mm to find the most accurate option.

What is the difference between pellets and slugs?

Pellets are suitable for most airguns, while slugs are primarily intended for powerful PCP air rifles designed to shoot them accurately.

Which ammunition is best for competition shooting?

High-quality match ammunition from manufacturers such as RWS and JSB Match is widely used because of its exceptional manufacturing consistency.

Can every 4.5 mm airgun shoot every type of ammunition?

No. Always check whether your airgun is suitable for the specific ammunition type, particularly when using slugs or BBs.

Why choose SEM Jacht & Schietsport?

SEM Jacht & Schietsport offers one of the most extensive selections of 4.5 mm airgun ammunition in Europe. From affordable Gamo pellets to world-class match ammunition from RWS and JSB Match, we help you choose the ideal projectile diameter, weight and shape to get the very best performance from your airgun.