20rds  357 Mag Corbon 125gr. HP Ammo For Sale. This is 357 Mag Corbon 125gr. Hollow Point Ammo. Like no other, Corbon’s JHP loads have proven stopping power. Their JHP loads come loaded with higher velocity and more energy values then their competitors. What you’ll get is a bullet traveling faster, but on impact the higher velocity will cause the hollow point to expand into A mushroom shape dispersing its energy into the target. Energy dispersal is the key to COR-BON’s proven stopping power.