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The lightest pellets with half round head from the JSB company. RS stands for
Rapid Speed because the velocity is much higher than with conventional
ammunition.
Product detail page
39 pcs in stock,
Estimated Delivery:
June 10 - 12.
€ 15.3
80× rated
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Ondřej Fiala
16.03.2026
Machine translation
Unfortunately, I definitely cannot recommend the ammunition. Over the years,
I have tried several packs and always the same problem – a number of pellets
have a deformed skirt so that they won't even fit into the magazine. When
loading two magazines (2×10 shots, random selection of pellets from the box),
7 pellets were damaged (see photo), i.e. 25%. This is probably due to the fact
that with such a light projectile, the skirt material is very thin and easily
damaged even in the new packaging, which is transported by courier service from
the e-shop. Or it could be a manufacturing defect, hard to say. Therefore,
I use slightly heavier JSB Exact Jumbo Express pellets, with which I have not
experienced this problem. Even groupings at 25 m are less accurate with RS than
with Express.
Grouping tested outdoors, temperature 15 °C, pressure 1016 hPa, calm
conditions, Air Arms S510 TDR R 5.5mm weapon, Garmion Xero C1 chronograph:
JSB Exact Jumbo RS, 10 shots, average muzzle velocity 184 m/s (see photo)
JSB Exact Jumbo Express, 10 shots, average muzzle velocity 180 m/s
(see photo)
Go to the store page of the JSB Exact Jumbo RS 5,52mm 500pcs
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