The firearm model H&K SL-8 is deployed to run the acceptance tests of cartridges. The cartridge is settled upon chambering till the case shoulder rests against the chamber cone. The cartridge case is made of steel, is bottle-shaped with non-projecting flange.
The bullet of 223Rem consists of two elements:
- bimetal jacket;
- lead core; Boxer primer, non-corrosive.