Ray,

But what I was comparing the 300 round nose to was the 220 flat point.

My theory is that when compared to something like a 110 grain 270 or a 220 grain 375 Hornady flat nose, the 300 round nose expands a bit on the nose and since it is almost a wadcutter to start with then a bit of expansion will make it a bigger calibre with a flat nose.....then because of its weight it actually travels through the animal like a roo or pig at much high velocity than does the 110 grain 270 or 220 grain 375 flat nose....and more importantly it hits the offside of the animal at much higher velocity and hence the frequently observed huge exits.

Mike