Omega is absolutely CORRECT with his informative "post"!!!!!!
NOW!!!!!...... for "the rest of the STORY"!!!!
The "kill'n power" of a roundball is NOT "based" upon FPE (foot pounds of energy), in fact for all practical purposes FPE is "irrevelent" when discuss'n the roundball. The "kill'n power" of a round ball is based on,.... "diameter and increased weight as diameter increases"!! (picture yoreself git'n "hit" by a bowl'n-ball, at a velocity of, a "mere" 50 FPS,... for an "exagerated" example)
Omega is correct when he states thet a roundball has a very low "ballistic coefficent", and sheds velocity quickly!!
I consider 125 yards to be the "MAMIMUM range" of my favorite .58,... this pure lead roundball weighs approx the same as some of the .40-.45 cal. jacketed bullets (at approx 300 grs).
"Weight" however, is wher all "SIMULARITY" of the two different bullets ENDS!!
Consider thet,.... a large, pure lead roundball,....
Makes a VERY large "entrance wound" in comparison to the liddle "jacketed bullets.
A large, pure lead round ball, gits MUCH LARGER with a lot less velocity,.... then is REQUIRED BY a "jacketed bullet" for it's "expansion".
The pure lead roundball, has the "ablity to flex" without the constriction of a "copper jacket". What this means is,.... the pure lead roundball more closely resembles a "hard ball of flexable putty" thet slightly changes "shape" rather then "direction" as it tears thru a critter's body without lose'n much of it's original "weight"!!
The pure lead roundball doesn't do it's "kill'n" by high-velocity, so "blood-shot meat is practicaly "non-existant".
In the "early years" in Africa, many hunters killed Elephants with the "simple" roundball,... of course they were use'n "very large" simple roundballs,.... and, "thet" is how you increase the "power" of a roundball,...... you go "LARGER",..... not "FASTER"!!
The simple "pure lead roundball" has served me faithfully for over 30 years on a great "variation" of game from bunnys to moose,.... and all it's ever asked of me,... "was to place it in the PROPER-PLACE, at the PROPER-DISTANCE"!!