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  • ATP KING .257
  • ATP KING .257

A new type of patented airgun turned lead bullets for the 21st century. ATP - Altaros Turned Projectiles, BC 0.28!

ATP slugs are made by using unique lead turning technology on a precision CNC machine that Altaros has developed first in the world. Slugs produced by this technology have very precise dimensions resulting in almost zero weight difference with excellent axial symmetry. That can't be achieved by any other method currently used. ATP slugs achieve a high ballistic coefficient of BC 0.28, which is the highest on the market.

These key features predetermine ATP to achieve maximum accuracy and stability when shooting at tens or hundreds of meters. Slugs made with this technology currently hold a world record of hitting target on 1 MILE from an airgun!

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This product can not be put in the basket, you can order ATP slugs on our licensed e-shop for selling firearms and ammunition:

Note: To lower the Shipping fees it is better to order more pieces in one shipment.

You will see the final price before finishing your order.

For more than 20 packages, please send us an email to, we will calculate the most advantageous postage and packaging according to the exact quantity and address.

Can be used for barrel with bore diameter .25 -6.35mm (not cal. but bore diameter !). Tested with .257 TJ barrel 1:14 twist and LW .25 caliber 1:10 twist (rifle barrel)

Parameters of SLUGS:

  • Ballistic coefficient BC 0.28 (function G1) - G7 0.144
  • Diameter - 6.41 mm .252"
  • Weight - 5.43g - 84 grain
  • Length - 16.9mm 0.665"
  • Quantity 100 pcs


  • High precision
  • Precise shape
  • Perfect symmetry and balance
  • Longer shape for better guidance in the barrel which contributes to higher accuracy
  • The highest ballistic coefficient on the market BC 0.28 (function G1 at muzzle velocity 275 m/s)
  • Extremely low weight differences - Significantly improved muzzle velocity consistency
  • Peripheral grooves for reduced friction allow easy insertion into the barrel
  • Packed individually in extremely durable packaging.

Visit: Customers reviews

.257 Slug Fly Tracking on 200m - Slow Motion

The appearance of the surface of the slugs may vary from one package to another, but this does not affect functionality or accuracy.