The St Louis City Police redo the 9mm v. 40 debate.

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Jeff White

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It sounds like the department firearms people know what they are doing.
from the article:
Officers "want a magic bullet," Kiphart said. "There is no magic bullet."

Where have I heard that before?

http://www.stltoday.com/stltoday/ne...7397F8E03445378186257459000671AA?OpenDocument

Some city police want more pistol firepower
By Patrick M. O'Connell
ST. LOUIS POST-DISPATCH
05/30/2008


St. Louis — The pistol in every St. Louis police officer's duty holster is a 9 mm Beretta 92F semiautomatic. It will dispense 16 slugs the diameter of a good-sized pen with as many pulls on the trigger.

Those bullets fly with the power to punch through eight sheets of drywall. But in today's tough crime environment, is it enough wallop to overpower an armed threat?

The St. Louis Police Officers Association is raising the question with a suggestion that the department switch to .40-caliber pistols, which experts say have more stopping power plus less tendency to pass through the target and on to unintended consequences.

It is a transition already made by many other large departments in the region, although city officers clearly find themselves most often under fire. That fire, some of them say, is increasingly heavy-caliber.


"We want to be able to compete with what's out on the street," said Sgt. Gary Wiegert, the association president. "Right now we can't. There's so much violence going on out on the street right now. … How do you contain someone if you're outgunned?"

But Sgt. William Kiphart, who heads the department's firearms training, said the issue is not as simple as it might sound. He insisted police most often face criminals with common-caliber handguns, meaning officers are rarely outgunned.

Kiphart said the department will run exhaustive tests in about three years on what the next generation of weapons should be. "We're not closing our mind to anything," he said. "It's a big puzzle, and I objectively compare each piece."

The city has used 9 mm Berettas for about 16 years, with each weapon in use about 10 years.

The 9 mm versus .40-caliber debate is "like splitting hairs," Kiphart said. "It comes down to accuracy, reliability of the equipment … and the skills of the person using the weapon."

He said the 9 mm Berettas have less recoil than .40-caliber weapons, and the smaller 9 mm projectile is more accurate.

The concept of stopping power is a myth — "There is no such thing," he said. The issue is where an officer places shots and the degree they penetrate.

Officers "want a magic bullet," Kiphart said. "There is no magic bullet."

Wiegert's concern is about how many hits it takes to incapacitate an adversary. Police studies show that some people can withstand grievous injuries and keep firing.

David Klinger, a professor of criminology at University of Missouri-St. Louis and former police officer, said, "All else equal, most people want to have a bigger round."

Caliber is a decimal of an inch; a .40-caliber bullet is four-tenths of an inch in diameter, about one-ninth larger than a 9 mm. While the hole sizes are close, the energy delivered by the larger bullet is significantly greater. Specifications from one ammunition maker, Winchester, show a 27.5 percent difference (408 foot-pounds, a standard measurement of force, compared with 320).

Wiegert also expressed concern that city police issued 9 mm rifles, which use the same ammunition as the pistols, when shotguns were phased out of patrol cars about 3½ years ago. He said that's not enough, either.

Kiphart said the Beretta CX4 Storm Carbines, equipped with holographic scopes, allow for a high level of accuracy from a long distance.

Many other area departments still carry 12-gauge shotguns, often the Remington Model 870 pump-action. Some, like Maryland Heights, Florissant and St. Peters, equip at least some cars with military-style rifles, which they say offer long-range punch with less chance of collateral damage than a shotgun.

In the city, police can call for the Hostage Response Team to get heavier firepower.

Long guns aside, police rely most heavily on their sidearms. For the Missouri Highway Patrol, Illinois State Police, St. Louis County police, Madison County Sheriff's Department, FBI and others, that means one brand or another of .40-caliber. Some, like University City and Creve Coeur, use 9 mm.

"It's going to depend a lot on who you talk to and what experience they have in the field," said Officer John Bozarth, armorer for the St. Louis County Police Department, which has used .40-calibers since 1991.

"With the .40-caliber, … most officers feel more comfortable with their ability to stop an assailant because of the bigger caliber, the bigger bullet," Bozarth said.

But it doesn't end with that, he noted. He prefers the feel and accuracy of the Beretta to the widely used .40-caliber Glock, noting that a 9 mm shot that hits its target is more valuable than a .40-caliber that doesn't. The county uses Sig Sauer brand .40-caliber pistols.

In testing with standard ammunition two years ago, Bozarth found that the 9 mm round had more penetrating power in building materials; it got through eight sheets of drywall, while the .40-caliber did not.

Too much penetration is a concern in police work, with fears that a slug may pass through a criminal or a wall and hit bystanders.

"The 9 mm goes through a whole lot more things that you don't want it to go through than the .40," Bozarth said.

At Maryland Heights, Officer Kevin Stewart said that was a consideration in his department's recent switch from 9 mm. He explained, "The .40-caliber is going to knock them down but not go through and hit somebody else."

[email protected] | 314-863-2821
 
I've fired a .40 caliber handgun and didn't find the recoil unmanageable. It also made good-sized holes in the paper. I'd take it over a 9mm if I got free ammunition like LEOs do (right?) but for private use they cost quite a bit more than 9mm.
 
Humm. Seems they are still worried about that very unlikely scenario of a bullet passing through a bg and hitting someone else.

A question.....It was stated that a .40 has more energy than a 9mm.

SO.....how is it that a 9mm goes through more walls in tests than the .40? :confused: That doesn't jive.
 
It was stated that a .40 has more energy than a 9mm.

SO.....how is it that a 9mm goes through more walls in tests than the .40? That doesn't jive.
Sectional density. The mass per unit of frontal area may be greater for heavy 9mm than for light .40, for example. Also, the .40 will use more energy punching through drywall than 9mm will because an unexpanded .40 caliber bullet has 20% more frontal area than an unexpanded 9mm bullet, and therefore has to displace 20% more drywall for any given depth of penetration.
 
My old Dept went from Glock 9mm to 40 cal and I for one could not notice any more recoil with the 40.I also do not agree with the statement made about the 9mm being a more accurate bullet than the 40 cal.That's horse manure.However comparing dollars to donuts,I do think the 40 cal. would hit harder and be a better manstopper for the most part.
 
Did anyone take a look at that diagram in that link? It shows the "actual bullet diameters", that drawing looks bigger than a .50 cal (at least it does on my screen)!
 
While I think this is largely unsupported garbage:
"We want to be able to compete with what's out on the street," said Sgt. Gary Wiegert, the association president. "Right now we can't. There's so much violence going on out on the street right now. … How do you contain someone if you're outgunned?"

this:
Wiegert also expressed concern that city police issued 9 mm rifles, which use the same ammunition as the pistols, when shotguns were phased out of patrol cars about 3½ years ago. He said that's not enough, either.

is a valid complaint. If I were a cop I'd want a rifle or a shotgun in my car, and pistol caliber doesn't count.
 
"We want to be able to compete with what's out on the street," said Sgt. Gary Wiegert, the association president. "Right now we can't. There's so much violence going on out on the street right now. … How do you contain someone if you're outgunned?"

[Sgt. William Kiphart] insisted police most often face criminals with common-caliber handguns, meaning officers are rarely outgunned.
:p
 
There's not much left to comment on in the 9mm vs. .40 debate, but *** were they thinking when they issued 9mm carbines in place of shotguns? I can't imaging why you wouldn't just keep the shotguns or got to real rifles.:confused:
 
Picard said:
If they do use hollow points, how can a bullet go through 8 sheets of drywall?

A lot of hollow-points won't expand in drywall. The cavity gets filled with drywall and the bullet continues on like a FMJ.
 
experts say have more stopping power plus less tendency to pass through the target and on to unintended consequences.
We certainly don't want that to happen. That's a great book and it didn't do anything wrong (although if any book will stop a round it's that one).

noting that a 9 mm shot that hits its target is more valuable than a .40-caliber that doesn't.
If you miss something with a .40 that you can hit with a 9mm you need to take care of the flinching problem first.

I wonder how much of the LE demand for the .40 is due to the FBI adopting it.

The "actual size" diagrams were pretty humorous. I assume that was intended for the print version. You can't do "actual size" on computers since everyone doesn't have the same size monitor or screen resolution.
 
* Quote:
pbearperry
Senior Member
*
My old Dept went from Glock 9mm to 40 cal and I for one could not notice any more recoil with the 40.I also do not agree with the statement made about the 9mm being a more accurate bullet than the 40 cal.That's horse manure.However comparing dollars to donuts,I do think the 40 cal. would hit harder and be a better manstopper for the most part.
______________________________________________________

I own a G19 and a G23 (same gun, one in 9mm the other in 40).

I find the recoil much more snappy with the G23 and I cannot shoot it as accurately in a simulated combat situation. I can double tap much more accurately with the 9mm version. Now, if I rest each gun on a bag and slow fire to shoot for accuracy, I see no difference. I do agree with pbearperry's statement about the 40 likely being a better manstopper, however.

Another poster stated that the 9mm overpenetrated (8 sheets of drywall, etc), well the police around here switched to 40 to GET MORE PENETRATION. I guess different agencies see the same thing thru a different set of experiences.

Nail
 
Quote:
It was stated that a .40 has more energy than a 9mm.

SO.....how is it that a 9mm goes through more walls in tests than the .40? That doesn't jive.

Sectional density. The mass per unit of frontal area may be greater for heavy 9mm than for light .40, for example. Also, the .40 will use more energy punching through drywall than 9mm will because an unexpanded .40 caliber bullet has 20% more frontal area than an unexpanded 9mm bullet, and therefore has to displace 20% more drywall for any given depth of penetration

Ah interesting, I've never really looked into understanding sectional density.

Makes me think though that this, in some situations, makes the .40 less effective. Since it bleeds energy so much faster than a 9mm, any barrier between the BG and officer is much more effective in reducing the power of the .40 thus making it LESS effective (penetration wise) then the 9mm would be in that same situation.

Of course all this makes it sound like there is only one type of ammo for each cal. Which is silly.
Once different bullet types and power levels start getting into the equation who knows what may happen.
 
A 9MM has les kick back than a .40 cal? I shot a .40 caliber a whileback and it felt like nothing. :| (no wonder SMGs are 9mm)
 
Oh, who cares...

Just remember that STL City PD has had people "accidentally" shot by "friendly fire" which entered at an acute upward angle under vests and other protective gear while on raids...

Which means that either Bubba tripped, and everyone kept shooting, or Bubba was down, and they capped him...
 
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