The Swedish armed forces have made in inquiry to FOI to perform ricochet test in order to ensure that the ammunition 5,56 mm sk ptr 5B stkprj meets the requirements concerning safety described in SäkI. This is an initial report on how the surface danger zones (SDZ) are constructed according to SäkI and how to perform experiments to obtain the parameters used for constructing the SDZ for 5,56 mm sk ptr 5B stkprj. Of the parameters used to construct SDZ in SäkI, the maximum range Dmax is the only one that is unique for different projectiles. The other parameters are either functions of Dmax or identical for all ammunition of cqalibre 5,56 mm and 7,62. The angle Q describes the border of the ricochet danger area and depends on the target. The SDZ described by NATO STANAG 2240 is composed of a ricochet danger area (RDA) dependent on the maximum ricochet range (MRR). To study the ricochet behavior of a projectile, there are two separate types of experiments that can be performed. First, simplified experiments with well defined target materials and angles and that are documented with doppler radar and high speed video footage. Second, field tests in real terrain, where a large number of shots provide a statistically probability far how the projectile ricochets. To ensure that the SDZ in SäkI accurately describe the risks that exist for ricochets with the existing small arms systems, both the projectile behavior and the traceability of the parameters of SäkI should be studied.