JSB's BEST SELLER ! It is absolutely the most popular ammunition at present.
 
The weight has been designed so that it agrees with most of the FT air rifles on the market. It is a very functional profile common for the whole Exact series. It owes its stable flying properties especially to the higher weight and the ideal gravity centre placement. The perfect alignment once again guarantees a perfect grouping! 
 
Muzzle velocity is 240 m/s if the power of airgun is set to 16J.
 
 
SPECS
177 DIABOLO JSB(58) EXACT
Catalogue ID Ballistica X© : 3382
Manufacturer's catalog. ID : 546235
Ballistic coefficient : 0.024 lb/in2 G1 ICAO
Muzzle velocity : 250 m/s
Mass : 0.55 g | 8.4878 grs
Bullet diameter : 4.51 mm | 0.178 in
Bullet length : n/a
SD: 0.038 lb/in2
Form factor : 1.5833 i1
ATMOSPHERE : Standard ICAO
Absolute pressure : 1013.25 hPa
Temperature : 15 °C
Wind : 0 m/s
Humidity : 0 %
Sound velocity : 340.3 m/s
Air density : 1.22543 kg/m3
TRAJECTORY :
Zero range : 25 m
MRD/GEE (+4 cm) : 47.84 m
Elevation : 0 °
SCOPE : 
Zero range : 25 m
MRD/GEE (+4 cm) : 47.84 m
Elevation : 0 °