This ammo is manufactured by Sellier and Bellot in the Czech Republic to military spec's. We sold this ammo in the past and it is fabulous ammo. It is very clean and acurrate. It is brass cased, boxer primed, and 100% non-corrosive. It contains a 62gr. SS109 penetrator green tip bullet. It is packed 20rds per box, 1000rds per sealed case.