Vezi aici : http://www.biathlonworld2.de/media/d...nd_c_rules.pdf
3.1.7 Ammunition
3.1.7.1 Required Characteristics
Only international standard .22 in. (5.6 mm) long rifle rim fire ammunition
may be used. The bullets must be made of a uniform substance,
lead (plumb) or a similar soft material such as a lead alloy (aliaj plumb)