Quote:
Originally Posted by ACORN
I keep reading that the .40 S&W is going the way of button shoes because of advancements in bullet designed has improved the 9mms performance to nearly .40 levels.
Why haven’t .40 caliber bullets been designed along the same lines?
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There is more BS and bad information in the handgun world than just about anywhere else. Well, politics aside...
Bullet technology is advancing across the board. What you may be hearing is Bubba's version of modern projectiles have made 9mms more lethal. It's true modern 9mm bullets are more effective but so are the other calibers.
Modern premium bullets are tuned to velocity. Short barrel ammo will have a bullet designed to expand at a lower velocity. A short barrel projectile fired at standard barrel velocities likely will expand too rapidly and not get enough penetration.
Modern terminal ballistics have shown that bullet placement, assuming enough penetration, is everything at handgun velocities. This can go against intuitive thinking; the old '.45 ACP is x times deadlier than 9mm' does not stand up to scrutiny.