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JSB KNOCK OUT SLUGS .177/4.51MM 10.03GR 500PCS



JSB’s Diabolo Knock Out Slugs give absolute impact! Now available in .177/4.51mm 10.03 grain 500PCS. These hollow point rounds produce wicked terminal expansion and penetration on impact. This, as well as their weight, makes them perfect for hunting, pest control and long range shooting.

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JSB KNOCK OUT SLUGS .177/4.51MM 10.03GR 500PCS

Get absolute impact with the JSB Knock Out Slugs .177/4.51mm 10.03gr 500PCS. These hollow point rounds produce wicked terminal expansion and penetration on impact. This, as well as their weight, makes them perfect for hunting, pest control and long range shooting.

They are the lightest slugs in the JSB Knock Out range, weighing 10.03 grain with a 4.51 mm body diameter. JSB specifies a Ballistic Coefficient of 0.047. These slugs feature a distinct hollow point, manufactured in the soft lead JSB is renowned for. JSB designed them with a well recessed base, producing wicked terminal expansion and penetration on impact.

These slugs are designed to work primarily in High Power Airguns, known as FAC in the UK. Recommended uses for these hard hitting slugs are hunting and pest control. They are perfect for long range shooting, in excess of 75 meter.



Calibre: 4.51mm (.177)
Weight: 10.03 grain / 0.650 gram
Tip: Hollow Point
Base: Recessed
BC: 0.047
Contents: 500PCS


About JSB

The history of the company goes back to 1991. The former owner of the company, Josef Schulz, started the production of the sporting ammunition for air weapons under the name of JSB MATCH DIABOLO BOHUMIN. Josef Schulz is a former active gun marksmen and coach. After he finished with the active shooting and coaching, he started engaging in the research and development in the field of air guns ammunition production.

Based on his personal experience, later he had stamping machines made, on which he started to produce the ammunition. In 2008 JSB Match Diabolo a.s., which bought Josef Schulz’s company, linked up with the previous Schulz’s activity and soon after changed into an incorporated company.


Quality Control

The quality control of the products is done throughout the whole process of pellets processing. In order to guarantee the highest quality of ammunition, they start at the very beginning, with the raw material control. They require the lead to be in a certified cleanness of 99,97%. The whole process is, of course, a manufacturing secret. However, each semi-product must meet specific quality requirements, which they continuously control.

Even through the above stated production quality control, all products undergo hand-picked quality control. They do this in a special department, which employs specifically trained workers. Their working tools are a magnifying glass, a pair of tweezers, micrometer and a table lamp. The human eye is in this process an irreplaceable “tool”, which can detect even the smallest imperfection.

The hand-picked quality control focuses on shape imperfections that not only show the constant proportions and weight of the pellets, but also the accuracy of the production equipment setting. If all edges are sharp and the shapes are full, they know for sure that the proportions and weight are perfect.


Manufacturer’s Website


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