I can't believe that I'm doing this.
I have never seen, nor have I ever heard of the ammo industry being concerned about lead nosed bullets, traveling at several times the velocity of shot, deforming in-flight.
I did say there was less total surface area deformed on large pellets as a simple consequence of size.
"Also, haven't you ever noticed that it takes more pounds pushing on the lesser square inches of a smaller bore to end up with the same velocity? "
A nothing less than astounding statement. Does the formula F=MxA ring a bell?
And a final note to all you squashy people, a hint: Newton's Third Law of Motion.

have another day
Dr.WtS