8-10 inch barrel in 300 Blackout is where you need to look. Even the 220 gr ammo out of the 9-10 inch barrels is ‘terminal’. Bullet development has come a long way. Even my 32 acp carry Beretta is deadly with the right bullets.
I hadn’t thought about 300 Blackout. ...years with M-16s in service followed by living in an area with extreme visibility.
Makes sense. Thanks!