JSB Exact Heavy 4,52 mm are ammunition for more powerful airguns (at least 16J) and are the ideal choice for the owner of these weapons.

Exact Heavy from JSB are, as the name suggests; heavy (0.670 g), stable and accurate diabodies.

This model is sought after for its minimal sensitivity to weather conditions and achieves muzzle velocity, set at 16J, 215 m / s.