Better stopping power 40 cal or 357?

Discussion in 'Glock Forum' started by Nat_Turner, Aug 23, 2012.

  1. Nat_Turner

    Nat_Turner New Member

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    I have a GLOCK G 27 and can buy a .357 barrel and shoot 357 bullets. Why would I do that unless 357 bullets have better stooping power???
     
  2. bountyhunter

    bountyhunter New Member

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    "Stopping power" is a topic that is discussed endlessly, never ended. There are .40SW defense loads with over 500 ft-lbs of muzzle energy, equvalent to the best .45ACP defense rounds. Plenty lethal.

    I don't shoot .357 SIG rounds such as you can in your Glock, but the .357 magnum (revolver) rounds are known for high stopping power. There is a school of belief that lighter rounds going very fast stop better than heavy slower ones, that being seen in ammo makers when they generally use a lighter grain bullet loaded up to +p in their defense loads.

    Both .40SW and ,357 SIG are lethal, urban mythology probably would say the .357 is a bit more so but shot placement dominates anyway not caliber.
     

  3. ineverFTF

    ineverFTF New Member

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    I personally dont have much experience with either round, but i agree with bountyhunter that shot placement is the key regardless of the cailber or cartridge. That said i personally wouldn't cc anything smaller than a .380 but thats me.
     
  4. ineverFTF

    ineverFTF New Member

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  5. NM-LEO

    NM-LEO New Member

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    Hmmm... I know that other Glock .40 pistols could be converted but I wasn't aware you could convert a G27 to .357 SIG......

    Either way, they are both lethal rounds that shoot fast and hit hard.
     
  6. spittinfire

    spittinfire New Member Supporter

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    You are splitting hairs if you are trying to determine which one has more "stopping power". If you shoot the 40 well, stick with it.
     
  7. yogiboobooranger

    yogiboobooranger New Member

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    Both calibers are pretty equal. The .357 Sig shoots a little flatter and penetration may be just a tad bit better (apples/oranges here). The one advantage to the .357 Sig is feed reliability. Since the case is a necked down case, with smaller diameter bullet,it feeds well, usually more reliable.
    And to answer the question as to whether you can shoot .357Sig in a G27...yes you can..get a barrel, and use your mags, it works. You can also get a 9mm barrel and use G26 mags also but ejection issues may change your mind here as far as 9mm. The conversion works however but would not be my choice to use for CCW.
     
  8. Corndork2

    Corndork2 New Member

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    .40S&W is a great round:
    Parent case 10mm Auto
    Case type Rimless, Straight
    Bullet diameter .400 in (10.2 mm)
    Neck diameter .423 in (10.7 mm)
    Shoulder diameter .423 in (10.7 mm)
    Base diameter .424 in (10.8 mm)
    Rim diameter .424 in (10.8 mm)
    Rim thickness .055 in (1.4 mm)
    Case length .850 in (21.6 mm)
    Overall length 1.135 in (28.8 mm)
    Case capacity 19.3 gr H2O (1.255 cm³)
    Rifling twist 1 in 16 in. (406 mm)
    Primer type Small Pistol
    Maximum pressure 35,000 psi (240 MPa)
    Ballistic performance
    Bullet weight/type Velocity Energy
    135 gr (8.7 g) Federal Premium JHP Reduced Recoil 1,190 ft/s (360 m/s) 424 ft·lbf (575 J)
    155 gr (10.0 g) Guardian Gold JHP 1,205 ft/s (367 m/s) 500 ft·lbf (680 J)
    165 gr (10.7 g) Remington Golden Saber 1,150 ft/s (350 m/s) 485 ft·lbf (658 J)
    180 gr (12 g) Magtech FMJ-FP 1,050 ft/s (320 m/s) 441 ft·lbf (598 J)
    200 gr (13 g) Doubletap FMJ-FP 1,050 ft/s (320 m/s) 490 ft·lbf (660 J)


    However, the .357SIG has great ballistics:
    Parent case .40 S&W
    Case type Rimless, bottleneck
    Bullet diameter 9.02 mm (0.355 in)
    Neck diameter 9.68 mm (0.381 in)
    Shoulder diameter 10.77 mm (0.424 in)
    Base diameter 10.77 mm (0.424 in)
    Rim diameter 10.77 mm (0.424 in)
    Rim thickness 1.40 mm (0.055 in)
    Case length 21.97 mm (0.865 in)
    Overall length 28.96 mm (1.140 in)
    Case capacity 1.27 cm³ (20 gr H2O)
    Rifling twist 406 mm (1 in 16 in)
    Primer type Small pistol
    Maximum pressure 275.8 MPa (40,000 psi)
    Ballistic performance
    Bullet weight/type Velocity Energy
    60 gr (3.9 g) Special Application Ammunition 2,410 ft/s (730 m/s) 774 ft·lbf (1,049 J)
    115 gr (7.5 g) Bonded defense JHP 1,550 ft/s (470 m/s) 614 ft·lbf (832 J)
    125 gr (8.1 g) FMJ-FP Match and Bonded defense JHP 1,450 ft/s (440 m/s) 584 ft·lbf (792 J)
    147 gr (9.5 g) Bonded defense JHP 1,250 ft/s (380 m/s) 510 ft·lbf (690 J)
    147 gr (9.5 g) FMJ-FP 1,255 ft/s (383 m/s) 514 ft·lbf (697 J)



    To make your arguement even more difficult.. both rounds are tried and tested by Law Enforcement. .40S&W is the round of choice for many Police Departments, and the FBI. .357SIG is the round of choice for the US Secret Service. .357SIG is loaded in the SIG P226's that protect the President of the United States on a daily basis.

    I personally use .40S&W as a training round on the range, but rely on .357SIG as my personal protection round.
     
  9. MULESKINNER

    MULESKINNER New Member

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    It's ALL about shot placement! I just read an article in today's newspaper about an on duty under cover cop who shot a knife wielding suspect that was about to lunge through his open unmarked cars passenger window with a knife. The officer shot the suspect in the chest with a .40CAL Glock. Don't know what round he was using and don't know which model Glock. More than likely a Mod 23 or a Mod 22.

    The suspect then ran one block and hid in a house where he was later found and taken into custody.

    The suspect survived and was sentenced to four years in jail, as he was a gang member. The doctors report later stated the round did not hit any bones or organs. So the bottom line is shoot the weapon and round you shoot best and practice, practice practice!
     
  10. USMC-03

    USMC-03 New Member

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    Multiple shots and shot placement with good quality ammo. Arguing calibers is pointless...just make good hits.
     
  11. MULESKINNER

    MULESKINNER New Member

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    What he said! 9MM is considered to be the smallest caliber for self defense. If you know you are going to a gun fight, bring a shotgun or a rifle! A hand gun in ANY caliber is a proven poor man stopper!

    Coming from a 28 year career in L/E, I can tell you the worst thing that ever happened to the viewing public was television! Hollywood has indoctrinated the public with the conception that a human target will fall over and die after being hit with one handgun round.

    Hollywood has also perpetrated the myth that a shotgun will knock a human being off their feet and push them rearward. Not fact guys. I know I'm preaching to the choir here, but a lot of "Non firearm" enthusiasts believe what they see on T/V. That's why they all scream when they see the news report where the police have to shoot a suspect multiple times!

    A human on drugs or alcohol, with a lot of Adrenalin flowing does not always feel pain or react to being shot! Ya have to hit a human in the brain or the central nervous system to take them down. The belief in the "One shot stop" bullet or caliber is garbage!

    Try this scenario. Run 50 yards to get your heart rate up before you shoot at a human size paper target that is bobbing and weaving. Then imagine the target is shooting back at YOU! That's what you will encounter in a gun fight with a human! Big difference than standing at a stationary paper target that does not shoot back!
     
    Last edited: Aug 24, 2012
  12. Glock17owner

    Glock17owner New Member

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    Man anything can kill us. Doesnt matter how fast or slow or big. Our body wasnt design for metal to rip thru it at all.

    All caliber are dangerous to our body and when lead get into your blood stream you have to take blood thinner.

    I don't wanna be shot with anything period...
     
  13. MULESKINNER

    MULESKINNER New Member

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    I think what the OP was asking is what caliber will stop an attacker better. None of us wants to be shot. Even a BB gun hurts and can put out an eye!

    I just don't want folks thinking any hand gun round is magic and will guarantee a one shot stop on a human. Clear as mud?
     
    Last edited: Aug 24, 2012
  14. Delmonte67

    Delmonte67 New Member

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    The G27 in fact can be converted to both 9mm and 357. Each additional barrel is around $100. - 3 calibers in one pistola. Just another reason why I Love my baby Glock G27!!! Ultimate CCW!!!
     
  15. NM-LEO

    NM-LEO New Member

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    **** I really had no idea!

    I've got a Lonewolf conversion barrel for my G22 and G23 but I never seen much point in modding my 27, hence the reason I was ignorant to it. Haha