Handguns and Hollow Points

Discussion in 'Ammunition & Reloading' started by canebrake, Mar 8, 2011.

  1. canebrake

    canebrake New Member

    Handguns and Hollow Points
    by Richard Johnson
    Posted 03/08/2011

    Blame Hollywood. Blame the evening news. Blame your Uncle Jim. There is a lot of incorrect information out there on firearms and ammunition.

    For whatever reason, bullet design and performance seems to have the largest amount of myths and half-truths circling around it. Some of these false beliefs have led to bad movie scenes and even worse, bad laws.

    When a handgun is loaded for self defense, most instructors advise to use quality hollow point ammunition. But why?

    The Hollow Point Bullet

    A hollow point bullet is a bullet that has some type of cavity scooped out of the center. Most hollow points do not have any actual “point” at all. A few like the CORBON Pow’RBall and the Hornady Critical Defense, use a polymer ball for filling in the cavity.


    The idea of a hollow point it to cause the bullet to expand when striking the target.

    A hollow point is not a “Dum-Dum” bullet. The Dum-Dum bullet was developed in the Dum-Dum arsenal in India in 1897. It was a rifle bullet with an exposed lead tip. The bullets were never fully developed and discontinued in 1899. Yet, to hear the media tell it, Dum-Dum bullets are the preferred ammo choice by gang bangers everywhere.​

    Why a Hollow Point

    In the self defense context, an expanding bullet is good for a variety of reasons.

    Generally speaking, to stop a violent attacker with a handgun, the bullets need to either disable the central nervous system (brain, spine) or cause massive blood loss which fuels the brain and muscles. So called “head shots” are difficult targets, so most instructors train students to aim at the “center of mass”: the upper torso region housing the heart and lungs.


    Without trying to sound crude, the bigger the holes you make in an attacker, the quicker he will bleed out and no longer threaten you or your loved ones. This is why many people prefer a .45 ACP to a 9mm. But, hollow points can make smaller cartridges more effective.

    When a hollow point strikes flesh, it is designed to expand, opening up like a mushroom. As the bullet expands, it can cause more tissue damage, which in turn more quickly renders the attacker unable to assault you.

    While precise measurements vary, under ideal conditions, a 9mm bullet can expand to nearly double its size (from .355” to nearly .7” in diameter.) Likewise, a .45 ACP bullet can expand to almost an inch in diameter.​

    Speed Kills

    Just because a bullet is a hollow point is no guarantee that it will expand. In fact, a great many hollow points fail to expand when used in self defense shootings. Why is this?

    There are several factors that affect hollow point expansion, but I’ve found the two most critical are the bullet design and bullet speed.

    Bullet designs have come a long way during the past 30 years. Premium hollow points were revolutionized in the 1980’s by the Hydra-Shok bullet developed by Tom Burczynski and Federal Cartridge. Since then we have seen a great deal of advancement by Burczynski and his contemporaries, bringing to the market some very good designs like the Speer Gold Dot, Winchester T-Series, Federal HST, Remington Golden Sabre and others.


    Current premium bullet designs take into account the latest information from the labs and the streets to ensure the bullets expand under a wide range of conditions.

    No matter how good bullet designs are, though, all of them need a minimum amount of velocity to ensure proper expansion. This is especially important when a hollow point is plugged by the clothing worn by an attacker.

    Generally, I have found that the narrower the bullet face, the more velocity needed to cause reliable expansion. In other words, a wide mouth .45 bullet is more likely to expand at lower velocities than a narrow 9mm. Narrow, low-velocity cartridges, like the .25 ACP and .32 ACP, rarely expand.

    Some bullet designs are specifically designed for lower velocities experienced in short barrel firearms. For example, the Speer Gold Dot 135 gr load designed specifically for snub nosed revolvers.

    Designs like the Critical Defense ammo help prevent the hollow point cavity from plugging by having a flexible polymer in the cavity. When the polymer is compressed, the force pushes against the interior walls of the cavity, enhancing expansion.​

    Penetration is Good, Over-Penetration is Bad

    Non-expanding bullets tend to go right through the body, exiting the bad guy and continuing in flight. Expanding bullets tend to stay in the body of the attacker.

    Notice I say “tend to.” There are no absolutes, and I can show you cases where hollow points expanded, yet still exited the torso, and cases where a non-expanding bullet stayed in the attacker.

    Bullets that over-penetrate, exiting the attacker, present several problems:

    - they fail to achieve maximum energy and momentum transfer, and

    - they present a danger to others in the area who may be struck by the still flying bullets.

    No matter what theory of stopping power you subscribe to, bullets that stay in the body tend to create larger temporary and permanent crush cavities because the bullets transfer more/all energy and momentum. The more “work” the bullet does on the attacker’s body, the quicker the attacker will cease his violent assault.

    The number of bystanders struck by over-penetrating bullets may be small. But, if your bullet kills a bystander, are you prepared to deal with the psychological, moral and legal consequences of that?​

    Hollow Points - Don’t Believe the Hype

    Hollow point bullets are an integral piece of safety equipment when we talk about stopping a violent attacker. They are likely to stop a violent attack quicker than non-expanding bullets.
    For some reason, a lot of myths surround hollow point bullets. Don’t buy into myths and wild guesses. ​

    To stop an attacker with a handgun, you need to get multiple shots on target quickly. Quality hollow points will simply make those shots more effective, and that is a good thing.
  2. dog2000tj

    dog2000tj New Member

    Nice article, thanks for posting :)

    On the topic of HP for self defense, do you have any Brand/Model recommendations/preferences?

  3. CA357

    CA357 New Member Supporter

    Good read. Thanks Cane.
  4. Jpyle

    Jpyle New Member

    Thanks Cane...great article. Would you mind if I sent a copy to the entire NJ legislature?
  5. JonM

    JonM Lifetime Supporting Member Lifetime Supporter

    good read :) i tend to buy whatever hollowpoint self defense ammo is available in 230grn 45acp loading is on the shelf at the time. since my colt series 70 eats everything from full wadcutters and empty cases to any hp round out there. my thinking is if it expands its just a bonus but its still 230grns of 45acp love if it doesnt for any goblin stupid enough to mess with me.

    so i dont worry about as even the 230grn fmj is a proven round in 100 years of combat actions around the globe fighting the forces of evil.

    there is more to terminal ballistics than science can ethically measure.
  6. Silvertip 44

    Silvertip 44 New Member

    Excellent article Cane.
  7. Jesse17

    Jesse17 New Member

    Thanks for the read Cane. Great info. Until my .380 thread, I never thought about a HPs being a safer option because of the lower chance of over penetration. I had only focused on the benefits they have on the bad guy.
  8. VitSports6

    VitSports6 New Member

    Very nice read, A lot of great info.
    Thanks :cool:
  9. winds-of-change

    winds-of-change The Balota's Staff Member

    Thank you very much. Very informational.

    LONGHAIR New Member

    In the Courtroom will-it make a case come-out one way or another??....I remember seeing on the news about a guy a year or so ago in Arizona who shot two dogs and then shot the dogs owner in a park when he was out jocking.....and if I recall his still in jail today....Anyway in court the prosacuiter said the AMMO was way over-kill......Does anybody else know or hear of yhis case???....just wandering.....Maybe two or tree years ago...not sure..........
  11. Samples.32

    Samples.32 New Member

  12. rifleman55

    rifleman55 New Member

    Very good post, I can tell you from experience that most crack heads/tweekers won't go down until the bleed out or get a head/spine shot.
    Never send a boy to do a man's work.

    John k
  13. stick_man

    stick_man New Member


    I have heard a lot of CCW instructors claim different things about different types of ammo being used in SD situations. My feeling about it is this: If you are going to use a gun in a self-defense situation, you want it to function as designed. Guns = lethal force, plain and simple. Many SD situations are a matter of "my life or your life". If I am going to shoot somebody, I want to make sure the shot is effective at stopping the threat immediately. Can a certain type of ammo be "overkill"? Dead is dead. I don't see how any type of bullet can kill somebody any deader than another type of bullet. The ONLY type I can think of would be some kind of explosive tip bullet. I remember the news media claiming Pres. Reagan was shot by some kind of an explosive laden .22 bullet. I have never found details of that particular type bullet, and for all I know the media could have been talking of a hollow-point CCI.

    BTW, thanks for the great read Cane.
  14. Dwood85

    Dwood85 New Member

    Great Article brother Cane!!
  15. 12fretter

    12fretter Member

    An injured bad guy can call a lawyer. I only take my full clip of JHP out of my .45ACP when I am at the range. When I'm ready to leave, it goes back in. Great article Cane. Thanks.
  16. armsmaster270

    armsmaster270 New Member

    If you carry what the cops carry in your jurisdiction there is not much they can say without indicting all the cops too. Except in NJ.
  17. dnthmn2004

    dnthmn2004 New Member

    Great article.

    Its written by a guy whos name is Dick Dick. lol