In war times, the "Ball ammo" was used in order to not kill and to wound ..........
where it would take more men to take the wounded off the field and to a aid station to receive care.
Less men on the field upped the odds for the other side.

It is a fact that Ball ammo will over penetrate and cause minimal tissue damage, due to its design, just as the old lead RN 38 special did when it started out as a LE load.

The design and shape of the bullet is Major, on how fast it will stop a threat, if it does not hit the heart, spine or brain and have to count on blood loss.

My use of a "Ball" load for SD use would be last on my list.