Pioneer2
Read the same article and was quite impressed.... but I do not think those would work all that well on a deer - would be just like shooting a modern solid bullet at them it would go right through - make a nice neat hole and the animal would be dead if your placement were right but I am not sure when the animal would know it.... But over there with those choices of animal pentration is everything and I guarantee you the bullets did not pass through...
Here is the video:
http://www.powerbeltbullets.com/trophyden.html
This is the bullet - steel tipped but driven by lead behind the tip so it can still obturate to the barrel....
FG
And you are right some do...