These are the 2 510gn SuperX factory ammo projectiles that were fired out of a hogsback CZ550 with the 25" barrel.
Velocity would've been around 2000fps...
On a drizzly day, myself and my brother-in-law fired 2 shots at a large gum tree about 15 meters away.
When we walked up to the tree to checked out the damage, we found one of the projectiles laying on the ground a few inches behind the tree.
And when I pulled the bark off the back of the same tree, the second projectile fell out!
So there you go, not very scientific - but I think still pretty impressive from a factory soft point...
