That peestol will need a 3-foot barrel to achieve those kinds of velocities. I've chonografed those very cartridges from my 4.5"-barreled Glock 32 at 1339FPS starting at 10'.
An EDC S&W M&P .45ACP. A dozen Glocks sold. NRA life member.
"If lethal force is warranted and appropriate under the circumstances, the" (defender) "must shoot until the threat ceases." Pinizzotto, Kern, and Davis, FBI Academy.