Modern Engineering Marvels on MSN

Engineers compare 9mm and .45 ACP: 8 constraints that decide the outcome

There is no standard caliber of handgun that offers an assured “off switch.” The fact that the 9mm vs. .45 ACP debate is never resolved is due to the fact that both have the same ability to arrive in ...
Opinion
Modern Engineering Marvels on MSNOpinion

The FBI’s caliber switches were engineered by penetration rules and pistol-wide reliability

The long loop of 9mm to 10mm to .40 S&W to 9mm by the FBI looks like a caliber argument until the medium of the test is revealed. When handgun bullets are compared to barriers and gel calibration ...