V opisu te krogle proizvajalec ne omenja niti jekla niti železa:
https://geco-munition.de/en/ammuniti...o.html#!0/21/0
Pač pa piše, da ima krogla dvoje jeder iz kositra. Citat iz tega opisa:
"This highly innovative jacketed bullet has two tin cores. Assisted by the hollow-point design, the pre-fragmented front core disintegrates instantly upon contact with the targeted animal and releases a large portion of its energy to quickly bring it down. Together with the jacket, the rear core remains a stable slug to penetrate and provide a certain exit wound."
Ne vem pa, če ima tudi kositer magnetne lastnosti.