Altaros ATP Smooth 6.45mm – Maximum Accuracy from CNC
Precision
The Altaros ATP Smooth 6.45mm (.254) slugs are engineered
for shooters who want the highest possible accuracy from their .25 calibre
airgun. Manufactured using advanced CNC turning technology, these slugs offer
exceptional uniformity, balance, and aerodynamic efficiency.
Designed specifically for Huben platforms, they are built to
deliver consistent results at extended distances.
CNC Turned for Elite Consistency
Unlike traditional swaged pellets, ATP Smooth slugs are
precision-machined:
- Near-zero
weight variation
- Perfect
symmetry and balance
- Extremely
consistent dimensions
This process produces highly repeatable performance and
tighter shot groupings.
High Ballistic Coefficient for Long-Range Shooting
One of the key advantages of the “Smooth” design is its
aerodynamic efficiency:
- Ballistic
coefficient up to ~0.21 (G1)
- Improved
energy retention at distance
- Flatter
trajectory compared to standard slugs
This makes them ideal for long-range airgun shooting where
stability is critical.
Optimised for Huben K1 Platforms
These slugs are specifically tuned for:
- Huben
K1 air rifle
- Other
compatible .25 calibre barrels
The 6.45mm (.254) diameter provides a precise fit,
improving efficiency and consistency in Huben barrels.
Precision Weight & Dimensions
- Weight:
approx. 51 grain (3.32g)
- Length:
approx. 10.8mm
- Pack
size: 100 slugs
This configuration balances velocity, stability, and
retained energy for optimal performance.
Smooth Profile for Reduced Drag
The “Smooth” design enhances performance:
- Improved
airflow for better ballistic efficiency
- Reduced
turbulence compared to grooved designs
- Consistent
flight characteristics at higher speeds
This contributes to better long-range accuracy and shot
consistency.
Engineered for Accuracy & Reliability
Additional design benefits include:
- Longer
profile for improved barrel guidance
- Peripheral
shaping to reduce friction during firing
- Stable
muzzle velocity due to tight tolerances
Together, these features maximise both accuracy and
consistency.
Protective Packaging for Perfect Condition
- Individually
seated in foam inserts
- Vacuum-sealed
to prevent movement
- Protects
against deformation during transport
This ensures every slug arrives in optimal condition.
Recommended Performance Setup
- Optimal
velocity: ~280 m/s (900 fps)
- Maximum
velocity: ~295 m/s (980 fps)
Operating within this range helps achieve the best accuracy.
Key Features
- CNC
turned .25 calibre lead slugs
- High
ballistic coefficient (~0.21 G1)
- Precision
6.45mm (.254) diameter
- Approx.
51 grain weight
- Designed
for Huben K1 platforms
- Extremely
consistent manufacturing
- Supplied
in packs of 100
- Protective
packaging for maximum integrity
Frequently Asked Questions (FAQ)
1. What makes “Smooth” slugs different?
They have a more aerodynamic profile, resulting in higher
ballistic efficiency and better long-range performance.
2. Are these better than standard ATP slugs?
For long-range shooting, yes—the higher BC improves
trajectory and energy retention.
3. Are they only for Huben rifles?
They are optimised for Huben barrels but may work in other
.25 rifles with suitable bore dimensions.
4. What velocity should I use?
Around 280 m/s (900 fps) is recommended for best
performance.
5. How many slugs are included?
Each pack contains approximately 100 slugs.
6. Are they suitable for long-range shooting?
Yes, they are specifically designed for medium to
long-range airgun use.
7. Do they require special storage?
No, but they come in protective packaging to maintain shape
and consistency.
8. Who are these best suited for?
They are ideal for precision airgun shooters and Huben
users seeking maximum performance.