Info - JSB Match Diabolo - pellets, ammunition


The products’ quality testing

The products are thoroughly tested before the beginning of each series’ production. The testing is done by shooting in a testing tunnel, so that we can limit the possible results’ influences due to weather conditions as much as possible. We use the top weapons from German, Austrian and British manufacturers. We always try several variations from which we choose the best one, which must correspond with our quality requirements.

We consider the central dispersion the most important parameter. This means the biggest distance of the individual shot centres. The way we find out is that we measure the most distant edge of the hit in the target and from this value we deduct the diameter of used pellets. We believe that this figure has the highest predicative ability of the shot alignment, constant weight, diameter and shape of individual pellets. The factory limit for weight consistency is up to 2.5% difference between individual pellets. Our test shooting proved that such a difference has no influence on accuracy of pellets. And of course, this test tests the most important property of the ammunition – to hit the target.

We consider the average shot alignment of five round clusters representative. Each five round cluster contains five shots. Other tested parameters (weapon, muzzle speed, distance …) are specific according to individual ammunition type.

The series Match pellets are tested by appropriate air rifles or guns to the distance of 10 metres. The required shot alignment is up to 5mm. The fact that we reach results smaller than 2mm in not an exception. Under these circumstances it may happen that the diabol is not able to fall through the shot hole spontaneously! (see picture)

The Diabolo pellets of the Exact series are tested with top air rifles used for Field Target shooting to the distance of 45 metres. We require the shot alignment of this ammunition to be up to 12mm with the diameter of 4,5mm (.177 cal.) and shot alignment of 16mm with the diameter of 5,5mm (.22 cal.). It is not a problem to reach the C-T-C around 5mm (or 9mm for the .22’s).

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 we start at the very beginning, with the raw material control (lead). We require this to be in a certified cleanness of 99,97%. The whole process is, of course, a manufacturing secret, but each semi product must meet specific quality requirements, which are continuously controlled.

Even through the above stated production quality control all products undergo hand-picked quality control. This is done in a company’s special department, which employs 20 specifically trained workers at present. Their working tools are a magnifying glass, a pair of tweezers, micrometer and a table lamp. A human eye is in this process a irreplaceable “tool”, which can detect even the smallest imperfection.

The hand-picked quality control focuses on shape imperfections that do 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, we know for sure that also the proportions and weight are alright. Incorrect setting of the production equipment can be shown in so-called overpress, fray, double material, scratches, and so on. Products, which are damaged in this way, are removed and recycled in the process of production.

Group packaging

The basic packaging (the number of pieces in a box) is stated in the production section. Here we want to give you information about group packaging. This is adjusted for various types of pellets according to the transport needs.

We use two types of cardboard transport boxes for this packaging. The first one has the dimension of 35 x 21,5 x 9 cm and its weight with full load is about 15 – 17 kg. One full row on an EUR palette (120 x 80 cm) consists of 12 cardboard transport boxes. The pellets are packed in the following way:

The pellets with the diameter of 5,0 and 5,5 mm (.20 cal. and .22 cal.) are also packed with 500 pieces into the metal boxes with the diameter of 92mm and the height of 20mm. Five of these boxes are sealed into a heat shrinkable foil. Six of these rolls are put into a transport box with the approximate weight of 17kg. The dimensions of such a transport box are 30 x 20 x 14 cm. One transport box therefore contains 30 metal boxes, that is 15.000 pieces. One full row on an EUR palette (120 x 80) consists of 16 cardboard transport boxes.