When you are forced to shoot ball ammo,
there is but one choice, the 45.
In the 70s when the 9MM became the goto
cal for LE, in the 39 & 59 S&W. On its inception, the lack
of stopping power, even w/the best HP ammo
was an unknown.
I believe it was Gun World that did an article on the
expansion of the 9 and it proved to be lacking in
human stopping power. On car sheet metal and windshields,
it punched nice neat round holes, and just about the same in
duksell(SP), which was a substance that closely resembled
human tissue.
After reading these results, I sold my 39 & 59 an reverted back to the .357 as my duty weapon. In that era the high capacity
9s became know as the spray and pray round. LDS