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Hollow-point lead slugs designed for powerful PCP air rifles and long-range
shooting. Thanks to their high ballistic coefficient, JSB KnockOut Slugs retain
velocity and energy better during flight.
Temporarily Unavailable
€ 9.8
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New videos and reviews every day 6000+ reviews from our customers JSB KnockOut Slugs are lead projectiles from Czech manufacturer JSB Match Diabolo, designed for powerful PCP air rifles and accurate long-range shooting.
Unlike conventional airgun pellets, they have a shape similar to a firearm bullet and a hollow point (Hollow Point), which promotes deformation on impact with the target. The high ballistic coefficient (BC) helps retain velocity and energy during flight, contributes to a flatter trajectory and reduces the effect of crosswinds.
Every barrel has its own specific characteristics and manufacturing tolerances. Differences in projectile diameter of just hundredths of a millimetre allow you to choose the ammunition best suited to a particular air rifle. Even within the same calibre, several diameters may be suitable, but their accuracy and group sizes may differ.
| Calibre | Projectile diameter | Weight | B. C. | Pack quantity |
| 4,5 mm | 4,51 mm / .177 | 0,650 g / 10,03 gr | 0,047 | 500 pcs |
| 4,5 mm | 4,52 mm / .177 | 0,870 g / 13,43 gr | 0,066 | 400 pcs |
| 5,5 mm | 5,49 mm / .216 | 1,350 g / 20,83 gr | 0,088 | 200 pcs |
| 5,5 mm | 5,49 mm / .216 | 1,645 g / 25,39 gr | 0,084 | 200 pcs |
| 5,5 mm | 5,51 mm / .217 | 1,645 g / 25,39 gr | 0,084 | 200 pcs |
| 5,5 mm | 5,53 mm / .218 | 1,645 g / 25,39 gr | 0,084 | 200 pcs |
| 5,5 mm MKII | 5,49 mm / .216 | 1,645 g / 25,39 gr | 0,086 | 200 pcs |
| 6,35 mm | 6,37 mm / .251 | 2,170 g / 33,49 gr | 0,092 | 150 pcs |
| 6,35 mm MKII | 6,35 mm / .250 | 2,170 g / 33,49 gr | 0,093 | 150 pcs |
| 7,62 mm | 7,62 mm / .30 | 3,250 g / 50,15 gr | 0,090 | 150 pcs |
The stated ballistic coefficient values are nominal and may vary depending on the specific shooting conditions.
WARNING: Slugs are intended only for compatible air rifles. We strongly advise against using them in choked barrels (with a constriction at the muzzle), unless the air rifle manufacturer explicitly confirms the suitability of this ammunition. An unsuitable projectile diameter or insufficient air rifle power may cause the projectile to become lodged in the barrel.
9× rated
By submitting your review, you are agreeing to our review guidelines. It will be published once we make sure it corresponds with our terms and conditions.
Daniel Klapac
30.05.2026
Machine translation
For me, one of the best lighter slugs and maybe even the best overall, but
I haven’t decided yet, since HN has some new cal 217 and low weights, so
I still need to compare it with those.
Michal Beránek
27.04.2026
Machine translation
In the photo, a grouping test at 50 m, five shots fired. Epic Two with a
700 mm barrel, set to 70 J (at this power the chronograph showed 320 m/s at
the muzzle).
2 minutes Buyer's Guide
Picking the right caliber for your airgun is a key step to getting the most out of it. Whether you're into target shooting, pest control, or just want something for recreational shooting, each caliber comes with its own pros and cons. Here's a quick guide to help you decide based on your shooting style and expectations.
