Just arrived. This is the ammo with the Expansion-arresting A-Frame® design bullets.
https://www.westernmetal.ca/shooting/454-casull-300-grain-federal-vital-shok-20-rounds-fc-p454sa-20
https://www.westernmetal.ca/shooting/454-casull-300-grain-federal-vital-shok-20-rounds-fc-p454sa-20
